6B25 - Body-Focused Repetitive Behavior Disorders: Complete Coding Guide

1. Introduction

Body-focused repetitive behavior disorders represent a group of conditions characterized by recurrent and habitual actions directed at the integument, including hair pulling, skin picking, and lip or cheek biting. These conditions, classified under code 6B25 in ICD-11, affect millions of people globally and frequently remain underdiagnosed due to associated stigma and lack of recognition by healthcare professionals.

The clinical importance of these disorders should not be underestimated. Patients frequently experience significant distress, social isolation, impairment in occupational functioning, and dermatological complications that may include secondary infections, permanent scarring, and in the case of trichotillomania, irreversible hair loss. The psychological impact is substantial, with many patients developing intense shame, avoidance of social situations, and psychiatric comorbidities such as depression and anxiety.

From a public health perspective, appropriate coding of these disorders is fundamental to ensure access to specialized treatments, allow for precise epidemiological studies, and facilitate the development of evidence-based mental health policies. The transition from ICD-10 to ICD-11 brought greater clarity in the classification of these disorders, recognizing them as distinct entities within the obsessive-compulsive spectrum. Correct coding allows for appropriate tracking of prevalence, allocation of therapeutic resources, and development of specific treatment protocols, in addition to validating the experience of patients who have frequently been minimized or misunderstood in the clinical context.

2. Correct ICD-11 Code

Code: 6B25

Description: Body-focused repetitive behavior disorders

Parent category: Obsessive-compulsive or related disorders

Official definition: Body-focused repetitive behavior disorders are characterized by recurrent and habitual actions directed toward the integument, including hair pulling, skin picking, and lip biting. These behaviors are typically accompanied by repeated and unsuccessful attempts to reduce or cease the activity, resulting in visible dermatological consequences such as hair loss, skin lesions, lip wounds, and scars.

The behavioral pattern may manifest in two main forms: brief and frequent episodes distributed throughout the day, often in response to specific emotional states or triggering situations; or less frequent but more prolonged periods of engagement in the behavior, which may last for hours. For the diagnosis to be established, symptoms must result in clinically significant distress or substantial impairment in personal, family, social, educational, or occupational functioning.

It is important to highlight that these behaviors are not better explained by other medical, dermatological, or psychiatric conditions, and are not performed primarily with the intention of deliberate self-harm. The recognition of these disorders as a specific diagnostic category in ICD-11 reflects the growing understanding that they represent distinct conditions that require specialized therapeutic approaches.

3. When to Use This Code

Code 6B25 should be used in specific clinical scenarios where diagnostic criteria are clearly present. Below are detailed practical situations:

Scenario 1: Trichotillomania with functional impairment A 28-year-old female patient presents with areas of alopecia on the scalp resulting from repetitive hair pulling over five years. She reports increasing tension before pulling hair and temporary relief sensation after the behavior. She has tried multiple times to stop without success, uses wigs and scarves to hide bald areas, avoids social activities such as swimming and gym, and reports significant impairment in interpersonal relationships. The behavior occurs mainly during stressful situations or when watching television.

Scenario 2: Dermatillomania with medical complications A 35-year-old male patient seeks dermatological care for recurrent facial lesions. During history taking, he reveals that skin picking is a habitual behavior for more than ten years. He spends hours daily examining and manipulating any skin imperfection, resulting in multiple open wounds, scars, and episodes of secondary infection requiring antibiotic treatment. He tries to wear gloves or cover mirrors, but cannot maintain these strategies. The behavior causes intense emotional distress and has already resulted in work absences.

Scenario 3: Lip biting with physical sequelae A 16-year-old adolescent presents with chronic lesions on the lips and inner oral mucosa due to compulsive biting. The behavior started three years ago and has progressively intensified. He bites his lips during classes, while studying, and while watching videos, often without noticing until feeling pain or bleeding. Recurrent lesions cause discomfort when speaking and eating, and the adolescent feels intense shame, avoiding photographs and close social interactions.

Scenario 4: Cheek biting with episodic pattern A 42-year-old professional reports repeatedly biting the inner cheek mucosa, especially during periods of intense work concentration or anxiety. The behavior occurs in episodes that can last from minutes to hours, resulting in painful wounds, chronic inflammation, and tissue alterations. She has tried various strategies to stop, including chewing gum, but without lasting success. The problem affects her ability to concentrate and causes embarrassment in professional meetings.

Scenario 5: Cuticle picking with social impairment A 24-year-old male patient presents with chronic periungual lesions on all fingers due to compulsive cuticle and skin picking around the nails. The behavior occurs mainly during situations of boredom or anxiety, such as watching online classes or virtual meetings. The lesions bleed frequently, cause pain, and have an aesthetically disturbing appearance. The patient avoids shaking hands, hides his hands in social situations, and reports that the problem negatively affects his self-esteem and relationships.

Scenario 6: Multiple body-focused behaviors A 31-year-old female patient presents with a combination of behaviors: pulling hair from eyebrows, picking small skin imperfections on the face, and biting lips. These behaviors have occurred for more than seven years, with variable intensity. She reports that the behaviors provide temporary relief from emotional tension, but are followed by intense shame. She has tried to stop multiple times without success, and the problem causes significant distress and avoidance of social situations.

4. When NOT to Use This Code

It is fundamental to distinguish body-focused repetitive behavior disorders from other conditions that may present with similar manifestations but require different coding:

Non-suicidal self-injury: When skin picking, scratching, or self-inflicted wound behavior is performed primarily with the intention of deliberate self-harm, to cope with intense emotions, or as a form of self-punishment, the appropriate code is 6B44 (Non-suicidal self-injury), not 6B25. The fundamental distinction is the underlying intentionality and motivation.

Primary dermatological conditions: Patients with intense pruritus due to conditions such as eczema, psoriasis, or dermatitis who scratch or pick at the skin in response to physical discomfort should not receive code 6B25. In these cases, the primary dermatological condition should be coded. The body-focused repetitive behavior is not motivated primarily by physical sensations such as itching.

Obsessive-compulsive disorder (6B20): When hair pulling or skin picking occurs exclusively in response to specific obsessions (for example, intrusive thoughts about contamination or symmetry) and is performed as a compulsion to neutralize anxiety associated with these obsessions, the appropriate diagnosis is OCD, not 6B25. In body-focused repetitive behavior disorders, the behavior is not preceded by typical obsessions.

Body dysmorphic disorder (6B21): If the behavior of skin picking or hair pulling is motivated primarily by excessive concerns about perceived defects in physical appearance (which are minimal or not observable by others), the correct diagnosis is body dysmorphic disorder. Although there may be overlap, the central motivation differs significantly.

Normative or transitory behaviors: Occasional behaviors of hair pulling, skin picking, or lip biting that do not cause significant distress, functional impairment, or dermatological sequelae do not justify diagnosis. Many people occasionally engage in these behaviors without them constituting a disorder.

General medical conditions: Trichotillomania secondary to neurological conditions, stereotyped behaviors in neurodevelopmental disorders, or skin manipulation due to dermatological delusions in psychotic disorders require coding of the underlying primary condition.

5. Coding Step by Step

Step 1: Assess diagnostic criteria

Diagnostic confirmation requires detailed clinical evaluation through structured or semi-structured interview. The professional must systematically investigate the presence of repetitive body-focused behaviors, including hair pulling, skin picking, lip or cheek biting, cuticle picking, or other similar behaviors.

It is essential to document the frequency, duration, and contexts in which the behaviors occur. Question about previous attempts to reduce or cease the behavior and the degree of success of these attempts. Standardized assessment instruments may be helpful, including severity scales specific to trichotillomania and dermatillomania.

Examine physical evidence of dermatological sequelae: areas of alopecia, skin lesions in various stages of healing, scars, post-inflammatory hyperpigmentation, lip wounds, or alterations in oral mucosa. Document photographically when appropriate and with patient consent.

Assess functional impact in personal, social, occupational, and educational domains. Question specifically about avoidance of social situations, impairment in relationships, difficulties at work or school, and associated emotional distress. Investigate common psychiatric comorbidities, including depressive disorders, anxiety disorders, and other related obsessive-compulsive disorders.

Step 2: Verify specifiers

ICD-11 does not establish formal severity specifiers for code 6B25, but clinical documentation should include information about the severity of the condition based on multiple parameters. Consider the extent of dermatological sequelae, the daily time devoted to the behavior, the degree of functional impairment, and the level of subjective distress.

Document the duration of symptoms, as diagnosis requires a persistent pattern of behavior, typically for several months. Describe the temporal pattern: whether behaviors occur in multiple brief episodes throughout the day or in prolonged, less frequent sessions.

Identify and record specific triggers when present: emotional states (anxiety, boredom, frustration), specific situations (watching television, reading, working on the computer), or environmental contexts. This information is valuable for therapeutic planning.

Assess the degree of awareness during the behavior: some patients report automatic behavior with little awareness, while others describe more conscious and focused engagement. Both patterns are consistent with the diagnosis.

Step 3: Differentiate from other codes

6B20 (Obsessive-compulsive disorder): The fundamental difference lies in the presence of typical obsessions in OCD—intrusive thoughts, images, or unwanted impulses that cause marked anxiety. In OCD, repetitive behaviors are performed as compulsions to neutralize specific obsessions. In body-focused repetitive behavior disorders, the behavior is not preceded by classic obsessions, although there may be increasing tension or urgency before the behavior.

6B21 (Body dysmorphic disorder): In body dysmorphic disorder, the central motivation is excessive concern about perceived defects in appearance that are minimal or unobservable. Behaviors such as skin picking may occur, but are secondary to dysmorphic concern. In 6B25, the repetitive behavior is the primary characteristic, not secondary to dysmorphic concerns about appearance.

6B22 (Olfactory reference disorder): This condition is characterized by persistent concern about emitting offensive or excessive body odor that is perceived as repugnant by others, but that is not detectable or only slightly perceptible. There is no significant overlap with body-focused repetitive behaviors, except if there is comorbidity.

Step 4: Required documentation

Adequate documentation should include a complete checklist of mandatory information to justify coding. Record detailed description of specific behaviors: type (hair pulling, skin picking, lip biting), body location, frequency, and duration.

Document observable physical sequelae: extent of hair loss, number and distribution of skin lesions, presence of scars or permanent alterations. Clinical photographs are valuable when appropriate.

Record previous attempts to control the behavior and results of these attempts. Document strategies that the patient has already attempted to implement, such as wearing gloves, covering mirrors, habit substitution techniques, or previous treatments.

Describe in detail the functional impact in each relevant domain: specific social avoidance, measurable occupational impairment, difficulties in interpersonal relationships, limitations in daily activities. Quantify subjective distress using scales when possible.

Explicitly exclude relevant differential diagnoses through documentation of absence of criteria for other conditions. Record assessment of relevant psychiatric and medical comorbidities.

6. Complete Practical Example

Clinical Case

A 26-year-old female patient, elementary school teacher, seeks psychiatric care referred by a dermatologist after multiple consultations for treatment of recurrent facial lesions. During the initial evaluation, she reports an eight-year history of skin-picking behavior on the face, neck, and shoulders.

The patient describes that the behavior began during a stressful university period and has progressively intensified. Currently, she spends between two to four hours daily examining her skin in mirrors, looking for any imperfection, irregularity, or "blackheads" that she then manipulates, squeezes, or picks using fingernails or instruments such as tweezers. The behavior occurs mainly at night after returning from work, but also at intervals during the day when she has access to mirrors.

On examination, she presents multiple lesions at different stages of healing on the face, including crusts, erythema, post-inflammatory hyperpigmentation, and some atrophic scars. She reports having had episodes of secondary infection requiring treatment with topical and systemic antibiotics.

The patient expresses intense emotional distress, describing profound shame about her appearance. She uses heavy makeup daily to camouflage the lesions, avoids situations with intense lighting, refuses invitations to social events, and feels that the problem is negatively affecting her romantic relationship. She reports having missed work on days when the lesions were particularly visible.

She attempted multiple strategies to stop: covered mirrors in her home, tried wearing gloves at night, asked her partner to alert her when she saw her picking, but no strategy was maintained successfully for more than a few weeks. She reports that the behavior provides temporary relief from tension or anxiety, but is invariably followed by intense feelings of guilt and shame.

She denies typical obsessive-compulsive symptoms, such as intrusive thoughts about contamination or need for symmetry. She denies suicidal ideation or intentional self-harm behavior. She reports mild to moderate depressive symptoms that she considers secondary to the main problem.

Step-by-Step Coding

Criteria analysis:

Repetitive body-focused behavior: Present - recurrent and habitual skin-picking for eight years.
Dermatological sequelae: Present - multiple lesions, scars, hyperpigmentation, history of secondary infections.
Unsuccessful attempts to stop: Present - multiple strategies attempted without lasting success.
Temporal pattern: Present - daily episodes totaling two to four hours, persistent pattern for years.
Significant distress: Present - intense shame, marked emotional distress.
Functional impairment: Present - social avoidance, work absences, impact on relationships.
Exclusion of other diagnoses: Behavior is not motivated by typical OCD obsessions, is not intentional self-harm, is not secondary to primary body dysmorphic concerns about appearance, is not a response to pruritus from a dermatological condition.

Code chosen: 6B25 - Body-focused repetitive behavior disorders

Complete justification:

The case meets all diagnostic criteria for body-focused repetitive behavior disorders. The skin-picking behavior is recurrent, habitual, and persistent over a prolonged period (eight years). There is clear evidence of significant dermatological sequelae, including active lesions, scars, and infectious complications.

The patient demonstrated multiple unsuccessful attempts to control or cease the behavior, a fundamental characteristic of the diagnosis. The temporal pattern is consistent, with daily episodes consuming significant time.

The criterion of clinically significant distress is clearly met, evidenced by intense shame and emotional anguish. The functional impairment is substantial and measurable: avoidance of social situations, work absences, use of time- and resource-consuming camouflage strategies, negative impact on intimate interpersonal relationships.

Exclusion of differential diagnoses was performed appropriately. There is no evidence of typical obsessions that would characterize OCD. The behavior is not intentional self-harm. Although there is concern about appearance, this is a consequence of lesions caused by the behavior, not primary body dysmorphic concern with perceived defects.

Complementary codes:

Considering the mild to moderate depressive symptoms reported, it may be appropriate to add a code for a depressive episode if diagnostic criteria are fully met upon more detailed evaluation. In this case, it would be coded separately as a comorbidity.

7. Related Codes and Differentiation

Within the Same Category

6B20: Obsessive-compulsive disorder

Use 6B20 when the patient presents with typical obsessions - intrusive, unwanted, and recurrent thoughts, images, or impulses that cause anxiety or marked distress - accompanied by compulsions performed to neutralize or reduce the anxiety associated with the obsessions. Example: patient who compulsively picks at skin only after touching objects considered contaminated, as a response to obsessions about germs.

Use 6B25 when repetitive body-focused behaviors occur without typical obsessions preceding OCD. The behavior may be preceded by tension or urgency, but not by specific obsessive thoughts about contamination, symmetry, or other classic obsessive themes.

Main difference: Presence versus absence of typical obsessions and the function of the behavior (neutralizing compulsion versus habitual body-focused behavior).

6B21: Body dysmorphic disorder

Use 6B21 when the central feature is persistent and excessive preoccupation with one or more perceived defects in physical appearance that are minimal or unobservable by others. The patient may pick at skin or pull hair, but these behaviors are secondary to the primary dysmorphic preoccupation. Example: patient convinced that their nose is grotesquely deformed (when in reality it is normal) and picks at minor facial imperfections trying to "correct" their appearance.

Use 6B25 when repetitive body-focused behavior is the primary and central feature. Although there may be concern with appearance, this is a consequence of injuries caused by the behavior, not a primary distorted belief about defects in appearance.

Main difference: Central motivation - primary dysmorphic preoccupation about appearance versus habitual repetitive body-focused behavior as the primary feature.

6B22: Olfactory reference disorder

Use 6B22 when the patient presents with persistent preoccupation about emitting offensive or excessive body odor that they believe is perceived as repugnant, unpleasant, or unacceptable by others, but that is not detectable or only slightly perceptible. Repetitive behaviors such as excessive washing may be present, but are secondary to the olfactory preoccupation.

Use 6B25 when repetitive behaviors are directed at the integument (hair pulling, skin picking, lip biting) and there is no primary preoccupation with body odor.

Main difference: Focus of preoccupation - perceived body odor versus repetitive behaviors focused on the integument.

Differential Diagnoses

Non-suicidal self-injury behavior (6B44): Distinguished by intentionality. In non-suicidal self-injury behavior, there is deliberate intention to cause physical harm to oneself, often to cope with intense emotions, self-punishment, or communicate suffering. In 6B25, the behavior is not primarily intentional self-injury, although it results in harm.

Substance use disorders: Repetitive behaviors such as skin picking can occur during stimulant intoxication. Distinguished by the temporal relationship with substance use and absence of the pattern when there is no use.

Autism spectrum disorders: Stereotyped behaviors may include body manipulation, but occur in the context of a broader pattern of deficits in social communication and restricted interests characteristic of autism.

8. Differences with ICD-10

In ICD-10, body-focused repetitive behavior disorders were not recognized as a unified diagnostic category. Trichotillomania was classified under F63.3 (Trichotillomania) within "Disorders of adult personality and behavior". Dermatillomania and other body-focused repetitive behaviors were often coded as F63.8 (Other disorders of adult personality and behavior) or even F98.8 (Other specified behavioral and emotional disorders with usual onset during childhood or adolescence).

ICD-11 represents a significant advance by creating the unified category 6B25 within obsessive-compulsive or related disorders. This reorganization reflects contemporary scientific understanding that these behaviors share phenomenological, neurobiological, and therapeutic characteristics, justifying cohesive grouping.

The main changes include formal recognition of multiple body-focused repetitive behaviors beyond trichotillomania, positioning within the obsessive-compulsive spectrum (reflecting research on shared neurobiological mechanisms), and more clearly defined diagnostic criteria that emphasize unsuccessful attempts to stop the behavior and significant functional impairment.

The practical impact of these changes is substantial. Unified coding facilitates identification of patients who require specialized treatments, enables more precise epidemiological studies on the prevalence and characteristics of these disorders, and promotes development of evidence-based therapeutic protocols. Healthcare professionals now have a clearer diagnostic framework, reducing the historical underdiagnosis of these conditions.

9. Frequently Asked Questions

How is the diagnosis of body-focused repetitive behavior disorders made?

The diagnosis is essentially clinical, based on detailed evaluation by a qualified mental health professional. The evaluation includes structured or semi-structured clinical interview to identify the presence of repetitive behaviors directed at the integument, frequency and duration of these behaviors, attempts at control, physical sequelae, and functional impact. Physical examination to document dermatological evidence is an important component. Standardized assessment instruments, such as disorder-specific severity scales, can assist in quantifying symptoms and monitoring treatment response. There are no specific laboratory or imaging tests for diagnosis, but dermatological evaluation may be necessary to exclude primary cutaneous conditions and treat complications.

Is treatment available in public health systems?

The availability of specialized treatment varies considerably among different regions and health systems. In well-structured public health systems, evidence-based treatments are generally available, including psychotherapy (particularly cognitive-behavioral therapy with habit reversal techniques) and pharmacotherapy when indicated. However, access may be limited by shortage of specialized professionals, prolonged waiting lists, or lack of recognition of the condition. Many patients end up seeking treatment in private services. Advocacy for greater availability of specialized mental health services is fundamental to improving access to appropriate treatment.

How long does treatment last?

The duration of treatment varies significantly depending on symptom severity, presence of comorbidities, individual response to intervention, and type of treatment implemented. Cognitive-behavioral therapy protocols with habit reversal typically involve 10 to 20 initial sessions, although some patients require more prolonged treatment. Maintenance of therapeutic gains may require periodic reinforcement sessions. When pharmacotherapy is used, treatment is generally maintained for several months to years, with adjustments based on response and tolerability. It is important to recognize that these disorders often follow a chronic course with fluctuations, and some patients require intermittent or long-term continuous treatment.

Can this code be used in medical certificates?

Yes, code 6B25 can be used in official medical documentation, including certificates, when appropriate and necessary. However, considerations regarding confidentiality and stigma should be carefully weighed. In many situations, it may be sufficient to use more general terminology such as "psychiatric disorder" or "mental health condition" without specifying the exact diagnosis, especially if the certificate will be viewed by multiple people. The decision should be made jointly with the patient, considering the need to justify absences or specific accommodations versus protection of privacy. When detail is necessary to justify prolonged leave or accommodations at work or school, use of the specific code may be appropriate.

Do these disorders have a cure?

The question of "cure" is complex. Many patients experience significant improvement or complete remission of symptoms with appropriate treatment, particularly cognitive-behavioral therapy with habit reversal. However, these disorders often follow a chronic course with a tendency toward recurrence, especially during periods of high stress. The realistic therapeutic goal is significant reduction in the frequency and intensity of behaviors, improvement in physical sequelae, decrease in emotional distress, and recovery of functioning. Some patients achieve sustained remission, while others require ongoing management. Prognosis is generally better when treatment is initiated early, there is good therapeutic adherence, and stressors are adequately managed.

Can children develop these disorders?

Yes, body-focused repetitive behavior disorders can begin in childhood or adolescence, although onset is more common in adolescence. In younger children, behaviors such as hair pulling may initially be transient and not necessarily progress to persistent disorder. Careful evaluation is necessary to distinguish normative developmental behaviors from pathological patterns that require intervention. When the diagnosis is established in children, the therapeutic approach should be adapted to the developmental level, often involving parents or caregivers significantly in treatment. Early intervention can prevent chronicity and development of secondary complications.

Is there a relationship between these disorders and other mental health problems?

Yes, psychiatric comorbidities are common in patients with body-focused repetitive behavior disorders. Depressive and anxiety disorders occur frequently and may be primary or secondary to the distress and impairment caused by repetitive behaviors. Other disorders in the obsessive-compulsive spectrum may also coexist. Substance use disorders, eating disorders, and personality disorders are observed in a proportion of patients. Comprehensive evaluation should include systematic screening for comorbidities, as these influence therapeutic planning and prognosis. Treatment frequently needs to address multiple conditions simultaneously to optimize outcomes.

Can family members help with treatment?

Yes, family involvement can be a valuable component of treatment, especially when the patient is a child or adolescent. Family members can be educated about the nature of the disorder, reducing misunderstandings and criticism that may exacerbate symptoms. They can assist in implementing behavioral strategies, such as environmental modification or reinforcement of alternative behaviors. However, it is important that family members avoid excessive monitoring or criticism, which can increase anxiety and worsen symptoms. Family therapy or psychoeducational sessions for family members are often recommended as a complement to individual treatment. The role of the family should be carefully defined by the health professional in collaboration with the patient.

Conclusion:

Code 6B25 represents an important advance in the recognition and classification of body-focused repetitive behavior disorders. Appropriate coding is fundamental to ensure appropriate access to specialized treatments, facilitate research, and promote better understanding of these frequently underdiagnosed conditions. Health professionals should familiarize themselves with the diagnostic criteria, differential diagnoses, and appropriate application of this code to optimize care for patients affected by these challenging but treatable conditions.

External References

This article was developed based on reliable scientific sources:

References verified on 2026-02-03

Body-Focused Repetitive Behavior Disorders

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