6C48 - Disorders Due to Use of Caffeine: Complete Clinical Coding Guide

1. Introduction

Disorders due to caffeine use represent a set of clinical conditions frequently underdiagnosed in contemporary medical practice, despite caffeine being the most consumed psychoactive substance worldwide. Present in coffee, teas, cola-type soft drinks, energy drinks, chocolate, and various supplements, caffeine is used daily by billions of people as a mild stimulant and to combat fatigue.

Although most consumers use caffeine without developing significant problems, a considerable portion of the population experiences adverse consequences related to its consumption. These can range from mild symptoms of intoxication to more severe presentations of induced anxiety, psychological dependence, and clinically relevant withdrawal syndrome.

The clinical importance of these disorders lies in the fact that their symptoms frequently mimic other medical and psychiatric conditions, leading to unnecessary diagnostic investigations and inappropriate treatments. Patients with palpitations, tremors, insomnia, and anxiety may simply be consuming excessive amounts of caffeine, but receive diagnoses of primary anxiety disorders or cardiac conditions.

From a public health perspective, the appropriate recognition of these disorders is essential, especially considering the exponential increase in energy drink consumption among adolescents and young adults. Correct coding according to ICD-11 allows for adequate epidemiological tracking, planning of preventive interventions, appropriate allocation of health resources, and precise clinical documentation for legal, administrative, and research purposes.

2. Correct ICD-11 Code

Code: 6C48

Description: Disorders due to use of caffeine

Parent category: Disorders due to substance use

Official definition: Disorders due to use of caffeine are characterized by the pattern and consequences of caffeine use. Caffeine is a mild psychostimulant and diuretic that is found in the beans of the coffee plant (species Coffea) and is a component of coffee, cola-type beverages, chocolate, a range of "energy drinks" and patented weight loss supplements. It is the most widely used psychoactive substance in the world and various clinical conditions related to its use are described, although severe disorders are relatively rare, considering its widespread use.

Caffeine intoxication is related to consumption of a relatively larger dose, typically exceeding 1 gram per day. Caffeine withdrawal is common when use ceases in individuals who have consumed caffeine for a prolonged period or in large quantities. Caffeine-induced anxiety disorder has been described, frequently following intoxication or heavy use.

This code encompasses a spectrum of clinical presentations ranging from isolated episodes of intoxication to problematic patterns of use with significant functional consequences. The classification recognizes that, although caffeine is widely consumed, some individuals develop patterns of use that warrant specific clinical attention.

3. When to Use This Code

Code 6C48 should be applied in specific clinical situations where caffeine use results in documentable adverse consequences. Below are detailed practical scenarios:

Scenario 1: Acute Caffeine Intoxication A 22-year-old patient presents to the emergency department with severe palpitations, generalized tremors, psychomotor agitation, nausea, and severe anxiety after consuming multiple energy drinks during an intensive study period. Reports ingesting approximately six cans of energy drink in four hours (totaling more than 1 gram of caffeine). Symptoms are temporally related to consumption and no other identifiable medical cause is present.

Scenario 2: Caffeine Withdrawal Syndrome A 45-year-old professional, habitual consumer of eight to ten cups of coffee daily for more than ten years, develops severe headache, marked fatigue, irritability, difficulty concentrating, and depressed mood after abruptly ceasing caffeine consumption per medical recommendation due to cardiac arrhythmia. Symptoms begin 12-24 hours after the last dose and significantly interfere with occupational functioning.

Scenario 3: Caffeine-Induced Anxiety Disorder A 35-year-old patient develops persistent generalized anxiety symptoms, including excessive worry, restlessness, muscle tension, and insomnia, temporally associated with increased coffee consumption from three to ten cups daily over the past six months. Symptoms improve significantly with reduction of caffeine intake, confirming the causal relationship.

Scenario 4: Persistent Problematic Use A 28-year-old individual continues consuming large quantities of energy drinks (five to six cans daily) despite experiencing recurrent palpitations, chronic insomnia, and tremors that interfere with daily activities. Acknowledges the problem but reports inability to reduce or control consumption, characterizing psychological dependence.

Scenario 5: Medical Complications Related to Chronic Use A patient with a history of excessive caffeine consumption (more than 800mg daily) develops erosive gastritis, exacerbation of gastroesophageal reflux, and worsening of preexisting anxiety symptoms, all directly related to and aggravated by the pattern of caffeine consumption.

Scenario 6: Caffeine Use in Context of Increased Risk A 16-year-old adolescent with a history of benign cardiac arrhythmia presents with episodes of symptomatic tachycardia after regular consumption of energy drinks, representing dangerous use that requires specific clinical intervention.

4. When NOT to Use This Code

It is essential to distinguish situations where code 6C48 is not appropriate to avoid inadequate coding:

Exclusion 1: Disorders Due to Other Stimulants If the patient presents problems related to the use of amphetamines, methamphetamine, methcathinone, or other synthetic stimulants, the correct code is 1016273204 - Disorders due to use of stimulants, including amphetamines, methamphetamine or methcathinone. Differentiation is essential because these stimulants have much greater dependence potential and more serious consequences.

Exclusion 2: Hazardous Use without Established Disorder For situations where there is a pattern of caffeine consumption that presents health risk but has not yet developed a complete disorder (without symptoms of intoxication, withdrawal, or dependence), use 656164398 - Hazardous use of caffeine. This code is appropriate for preventive interventions before the development of an established disorder.

Exclusion 3: Normal Caffeine Consumption Regular caffeine consumption within limits considered safe (up to 400mg daily for healthy adults), without adverse consequences, does not justify any coding. The majority of coffee and tea consumers fall into this category.

Exclusion 4: Symptoms Attributable to Other Conditions When symptoms such as anxiety, insomnia, or palpitations exist independently of caffeine consumption or do not improve with its cessation, other medical or psychiatric conditions should be investigated and coded appropriately.

Exclusion 5: Expected Pharmacological Effects Mild increase in alertness, temporary reduction of fatigue, and mild diuresis are expected pharmacological effects of caffeine and do not constitute a disorder. Only when there are significant adverse consequences or loss of control over use is coding appropriate.

5. Step-by-Step Coding Process

Step 1: Assess Diagnostic Criteria

The first step involves confirming that there is truly a caffeine-related disorder. This requires:

Detailed History of Consumption:

Quantify daily consumption from all caffeine sources (coffee, tea, soft drinks, energy drinks, chocolate, medications)
Establish the duration of the consumption pattern
Identify previous attempts at reduction or cessation
Document adverse consequences experienced

Symptom Assessment: For intoxication: restlessness, nervousness, excitement, insomnia, facial flushing, increased urination, gastrointestinal disturbances, muscle twitches, disorganized thinking and speech, tachycardia or cardiac arrhythmia, periods of inexhaustibility, psychomotor agitation.

For withdrawal: headache, marked fatigue, drowsiness, dysphoric mood or irritability, difficulty concentrating, flu-like symptoms.

Assessment Instruments: Use structured questionnaires on caffeine consumption, consumption diaries for at least one week, and symptom severity scales when available.

Step 2: Verify Specifiers

ICD-11 allows additional specification through subcategories of code 6C48:

Type of Presentation:

Acute intoxication
Withdrawal
Induced anxiety disorder
Problematic use pattern

Severity: Assess functional impact in occupational, social, family, and physical health domains. Document whether there is mild, moderate, or severe impairment of functioning.

Duration: Distinguish between isolated acute episodes and chronic patterns of problematic use. Document how long the disorder has been present.

Step 3: Differentiate from Other Codes

6C40 - Disorders due to use of alcohol: The fundamental difference lies in the substance involved. While alcohol is a central nervous system depressant with high potential for physical dependence and serious medical consequences, caffeine is a mild stimulant. Alcohol produces intoxication with significant cognitive and motor impairment, marked tolerance, and potentially fatal withdrawal syndrome, characteristics absent or much less pronounced with caffeine.

6C41 - Disorders due to use of cannabis: Cannabis produces perceptual alterations, euphoria, impairment of short-term memory and motor coordination, effects not observed with caffeine. Cannabis has a much more pronounced psychoactive effects profile and typically recreational use pattern, while caffeine is generally used functionally.

6C42 - Disorders due to use of synthetic cannabinoids: Synthetic cannabinoids are substances with potency much greater than natural cannabis, frequently causing severe adverse effects including psychosis, seizures, and significant cardiovascular toxicity. The risk profile and consequences are incomparably more severe than those associated with caffeine.

Step 4: Necessary Documentation

Checklist of Mandatory Information:

Precise quantification of caffeine consumption (mg/day)
Specific sources of caffeine consumed
Duration of consumption pattern
Specific symptoms experienced
Temporal relationship between consumption and symptoms
Documented functional consequences
Attempts at reduction or cessation and their results
Exclusion of other medical causes for symptoms
Relevant medical and psychiatric comorbidities

Appropriate Record: Documentation should include detailed narrative description of the case, justification for diagnosis based on specific criteria, and treatment plan including goals for reduction or cessation of consumption.

6. Complete Practical Example

Clinical Case:

A 32-year-old female patient, technology professional, presents to medical consultation with chief complaint of frequent palpitations, hand tremors, difficulty sleeping, and increasing anxiety over the past four months. She reports that symptoms have progressively worsened and have begun to interfere with her work performance and personal relationships.

During detailed history taking, the patient reveals that approximately six months ago she assumed a new position with greater responsibility and tighter deadlines. To manage the increased demand, she began consuming increasing quantities of coffee and energy drinks. Currently, she consumes approximately six large cups of coffee during the workday (approximately 600mg of caffeine), two energy drinks in the afternoon (an additional 320mg of caffeine), and occasionally caffeine tablets when working late (an additional 200mg). Total estimated consumption ranges between 900-1100mg of caffeine daily.

The patient reports that when she attempts to reduce consumption on weekends, she develops intense headache, extreme fatigue, and marked irritability—symptoms that lead her to resume consumption for relief. She acknowledges that the consumption pattern is problematic but feels unable to reduce it due to fear of being unable to maintain her professional performance.

On physical examination: anxious patient, fine tremor in the extremities, heart rate of 102 bpm at rest, blood pressure 138/88 mmHg. Complementary tests (electrocardiogram, complete blood count, thyroid function, electrolytes) within normal limits, excluding organic causes for the symptoms.

Step-by-Step Coding:

Criteria Analysis:

Documented excessive consumption: Daily consumption of 900-1100mg of caffeine, well above the limit considered safe (400mg for adults).
Symptoms of chronic intoxication present: Palpitations, tremors, insomnia, and anxiety directly related to excessive consumption.
Documented withdrawal symptoms: Headache, fatigue, and irritability when attempting to reduce consumption, confirming physical dependence.
Loss of control: Acknowledges the problem but cannot reduce consumption, indicating psychological dependence.
Functional consequences: Interference with work performance and personal relationships.
Exclusion of other causes: Normal complementary tests rule out alternative organic causes.

Code Selected: 6C48 - Disorders due to use of caffeine

Complete Justification: Code 6C48 is appropriate because the patient presents multiple characteristics of caffeine use disorder: chronic excessive consumption, intoxication symptoms, withdrawal syndrome when attempting to reduce, psychological dependence with loss of control over use, and significant adverse consequences for health and functioning. The presentation does not fit isolated "hazardous use" as an established disorder already exists with multiple problematic dimensions.

Complementary Codes:

Codes for specific symptoms may be added if clinically relevant for follow-up (e.g., palpitations, substance-induced anxiety disorder)
Document comorbidities if present

Documented Treatment Plan: Supervised gradual reduction of caffeine consumption (reduction of 100mg per week), substitution with decaffeinated beverages, education on caffeine sources, energy management strategies without stimulants, monitoring of withdrawal symptoms, reassessment in two weeks.

7. Related Codes and Differentiation

Within the Same Category:

6C40: Disorders due to use of alcohol

When to use vs. 6C48: Use 6C40 when the problematic substance is alcohol, not caffeine. Even if the patient consumes both substances, code each disorder separately if both are present.

Main difference: Alcohol causes intoxication with significant impairment of judgment, motor coordination and cognition, has much greater potential for severe physical dependence, and withdrawal syndrome can be fatal (delirium tremens). Caffeine produces mild stimulation and withdrawal, although uncomfortable, is not dangerous. Alcohol is also associated with much more severe social and legal consequences.

6C41: Disorders due to use of cannabis

When to use vs. 6C48: Apply 6C41 when the disorder is related to cannabis use (marijuana), not caffeine. Cannabis and caffeine have completely different profiles of effects and consequences.

Main difference: Cannabis produces perceptual alterations, euphoria, relaxation, impairment of working memory and psychomotor slowing - effects opposite to caffeine which is stimulating. Cannabis use is typically recreational and often illegal, while caffeine is legal and universally socially accepted. The pattern of use, motivations and consequences are fundamentally different.

6C42: Disorders due to use of synthetic cannabinoids

When to use vs. 6C48: Use 6C42 for disorders related to synthetic cannabinoids (substances such as "spice" or "K2"), not for problems with caffeine.

Main difference: Synthetic cannabinoids are much more potent and dangerous substances than natural cannabis, frequently causing severe adverse effects including acute psychosis, extreme agitation, seizures and severe cardiovascular toxicity. These substances have an incomparably higher risk profile than caffeine and are generally used by individuals seeking intense psychoactive effects, a context completely different from caffeine use.

Differential Diagnoses:

Primary Anxiety Disorders: Can be confused with caffeine-induced anxiety disorder. Differentiation requires assessing whether anxious symptoms precede caffeine use, persist during periods of abstinence, and whether there is family history or other risk factors for primary anxiety disorder.

Hyperthyroidism: Can mimic caffeine intoxication with symptoms such as tachycardia, tremors, anxiety and insomnia. Thyroid function tests are essential for differentiation.

Cardiac Rhythm Disorders: Primary arrhythmias can cause palpitations similar to those induced by caffeine. Cardiac evaluation with electrocardiogram and, if necessary, Holter monitoring, is fundamental.

Panic Disorder: Panic attacks can be precipitated by caffeine in susceptible individuals, but panic disorder has specific characteristics including unexpected attacks not related solely to caffeine consumption.

8. Differences with ICD-10

In ICD-10, disorders related to caffeine use were less specifically coded and frequently underestimated. The closest code was F15.9 - Mental and behavioral disorders due to use of other stimulants, including caffeine - unspecified disorder, which grouped caffeine with other stimulants.

Main Changes in ICD-11:

ICD-11 introduces the specific code 6C48 exclusively for disorders due to caffeine use, representing an important recognition of the clinical relevance of these disorders. This specificity allows:

Better epidemiological tracking of the problem
Clear differentiation of disorders from other stimulants
Greater diagnostic precision and coding accuracy
Recognition that caffeine, despite being widely consumed and generally safe, can cause clinically significant disorders in some individuals

ICD-11 also provides clearer and more operationalized definitions, including specific criteria for intoxication (consumption exceeding 1g/day), detailed description of withdrawal syndrome, and explicit recognition of caffeine-induced anxiety disorder.

Practical Impact:

This change facilitates the recognition and appropriate treatment of these disorders, which were previously often undiagnosed or incorrectly attributed to other conditions. Healthcare professionals now have more precise diagnostic tools and specific coding allows better documentation and follow-up of these patients.

9. Frequently Asked Questions

1. How is the diagnosis of disorders due to caffeine use made?

The diagnosis is essentially clinical, based on detailed history of caffeine consumption patterns and evaluation of presented symptoms. The physician should quantify all sources of caffeine consumed daily (coffee, tea, soft drinks, energy drinks, chocolate, medications), establish the temporal relationship between consumption and symptoms, and document adverse consequences. There are no specific laboratory tests required, but tests may be ordered to exclude other causes of symptoms (such as thyroid function to exclude hyperthyroidism, electrocardiogram to evaluate palpitations). The diagnosis requires that symptoms cause clinically significant distress or functional impairment.

2. Is treatment available in public health systems?

Treatment for caffeine use disorders is generally available in general medical services and does not require specialized resources in most cases. The main approach is supervised gradual reduction of consumption, patient education about caffeine sources and their effects, and management of withdrawal symptoms when present. More complex cases, especially when there is significant induced anxiety disorder or psychiatric comorbidities, may benefit from referral to mental health services. Treatment does not involve specific medications in most cases, making it accessible in various health care settings.

3. How long does treatment last?

The duration of treatment varies according to the severity of the disorder and the established consumption pattern. For cases of acute intoxication, symptoms generally resolve within 24-48 hours after cessation of consumption. Withdrawal syndrome typically lasts 2 to 9 days, with peak symptoms at 24-48 hours. For supervised gradual reduction in cases of chronic dependence, the process may take 4 to 12 weeks, depending on the amount consumed and the rate of reduction tolerated by the patient. Long-term follow-up may be necessary to prevent relapse, especially in individuals with strongly established use patterns or risk factors for resumption of excessive consumption.

4. Can this code be used in medical certificates?

Yes, code 6C48 can be used in medical certificates when caffeine use disorder causes temporary incapacity for work or other activities. Situations that may justify leave of absence include severe acute intoxication with incapacitating symptoms (intense palpitations, tremors, severe anxiety), significant withdrawal syndrome during discontinuation process (intense headache, extreme fatigue), or when the disorder is causing decompensation of preexisting medical conditions. The duration of leave should be proportional to the severity of symptoms and the demands of the patient's occupation. Detailed documentation is important to justify the leave of absence.

5. What is the difference between normal caffeine consumption and caffeine use disorder?

The fundamental difference lies in the presence of significant adverse consequences and loss of control over consumption. Normal caffeine consumption (generally up to 400mg daily for healthy adults) occurs without problematic symptoms, the individual can reduce or cease consumption when desired without significant difficulty, and there is no interference with functioning or health. Caffeine use disorder involves excessive consumption (generally above 600-1000mg daily), presence of intoxication or withdrawal symptoms, difficulty controlling or reducing consumption despite adverse consequences, and negative impact on physical health, mental health, or social/occupational functioning.

6. Can children and adolescents develop caffeine use disorders?

Yes, children and adolescents are particularly vulnerable to the adverse effects of caffeine due to lower body mass and lower tolerance. The increasing consumption of energy drinks in this population is concerning, as these beverages contain high concentrations of caffeine. Young people may develop intoxication symptoms with smaller doses than adults, and regular consumption can interfere with sleep, development, and school performance. Diagnosis in young people requires special attention to consumption patterns, motivations (frequently related to academic or sports performance), and family education about risks.

7. Is it possible to have caffeine dependence like other drugs?

Caffeine can cause dependence, but with characteristics distinct from other substances. Caffeine dependence is primarily psychological, with a lighter physical component compared to drugs such as alcohol or opioids. Dependent individuals experience compulsion to consume caffeine, difficulty reducing or ceasing use, and withdrawal syndrome when stopping (headache, fatigue, irritability). However, caffeine does not cause the severe social, occupational, and health deterioration associated with substances with greater abuse potential. Caffeine dependence is real but generally less severe and more easily treatable than dependence on other psychoactive substances.

8. What are the long-term risks of excessive caffeine consumption?

Chronic excessive caffeine consumption is associated with various health risks. Cardiovascularly, it can contribute to arterial hypertension, cardiac arrhythmias, and in susceptible individuals, increase cardiovascular risk. Gastrointestinally, it can cause or worsen gastritis, gastroesophageal reflux, and peptic ulcers. Psychiatrically, it is associated with exacerbation of anxiety disorders, chronic insomnia, and possible contribution to depressive symptoms. Other risks include bone demineralization (due to increased calcium excretion), interference with iron absorption, and possible negative effects on fertility. Early identification and treatment of caffeine use disorders can prevent these long-term complications.

Conclusion

Disorders due to caffeine use, coded as 6C48 in ICD-11, represent relevant clinical conditions that require adequate recognition and appropriate intervention. Although caffeine is the most widely consumed psychoactive substance globally and generally safe at moderate doses, a significant proportion of users develop problems related to its consumption.

Precise coding of these disorders is essential for adequate clinical documentation, epidemiological tracking, public health planning, and ensuring appropriate treatment. Healthcare professionals should be alert to signs of problematic caffeine consumption, especially considering that many patients do not recognize caffeine as a potential cause of their symptoms.

Treatment is generally straightforward, based on supervised gradual reduction and education, with a favorable prognosis in most cases. The specificity of code 6C48 in ICD-11 represents an important advance in the recognition and management of these disorders, facilitating a more precise and effective clinical approach.

External References

This article was prepared based on reliable scientific sources:

🌍 WHO ICD-11 - Disorders due to use of caffeine
🔬 PubMed Research on Disorders due to use of caffeine
🌍 WHO Health Topics
📋 NICE Mental Health Guidelines
📊 Clinical Evidence: Disorders due to use of caffeine
📋 Ministry of Health - Brazil
📊 Cochrane Systematic Reviews

References verified on 2026-02-03

Disorders Due to Caffeine Use

Share