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ICD-10 Guide
ICD-10 CodesF12.121

F12.121

Billable

Cannabis abuse with intoxication delirium

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 F12.121 is a billable code used to indicate a diagnosis of cannabis abuse with intoxication delirium.

Key Diagnostic Point:

Cannabis abuse with intoxication delirium refers to a pattern of cannabis use that leads to significant impairment or distress, characterized by the presence of delirium during intoxication. Symptoms may include confusion, altered consciousness, perceptual disturbances, and cognitive impairment. This condition arises when an individual consumes cannabis in excessive amounts, leading to acute psychological effects that can mimic or exacerbate underlying mental health disorders. The diagnosis requires careful assessment of the patient's history of cannabis use, the severity of symptoms, and the exclusion of other potential causes of delirium. Treatment typically involves supportive care, monitoring, and addressing any co-occurring mental health issues. Long-term management may include substance use counseling and participation in rehabilitation programs to prevent relapse and promote recovery.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between intoxication delirium and other mental health disorders.
  • Need for comprehensive patient history to establish cannabis use patterns.
  • Potential overlap with other substance use disorders complicating diagnosis.
  • Variability in symptoms and severity among individuals.

Audit Risk Factors

  • Inadequate documentation of cannabis use history.
  • Failure to document the severity and duration of delirium symptoms.
  • Misclassification of intoxication delirium as a primary mental health disorder.
  • Lack of evidence for supportive care provided during treatment.

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed patient history, mental status examination, and treatment plan.

Common Clinical Scenarios

Patients presenting with acute confusion, hallucinations, or cognitive impairment after cannabis use.

Billing Considerations

Consideration of co-occurring mental health disorders and their impact on treatment.

Addiction Medicine

Documentation Requirements

Comprehensive assessment of substance use history and treatment goals.

Common Clinical Scenarios

Patients seeking help for cannabis dependence and experiencing acute intoxication symptoms.

Billing Considerations

Integration of behavioral therapies and support systems in treatment planning.

Coding Guidelines

Inclusion Criteria

Use F12.121 When
  • According to ICD
  • 10 coding guidelines, F12
  • 121 should be used when there is clear evidence of cannabis abuse leading to intoxication delirium
  • Documentation must support the diagnosis, including the patient's history of use, symptomatology, and any co
  • occurring conditions

Exclusion Criteria

Do NOT use F12.121 When
  • Exclusion criteria include delirium caused by other substances or medical conditions

Related ICD-10 Codes

Related CPT Codes

99214CPT Code

Established patient office visit, level 4

Clinical Scenario

Used for follow-up visits after initial evaluation of cannabis abuse.

Documentation Requirements

Document the patient's history, current symptoms, and treatment plan.

Specialty Considerations

Psychiatry may require additional mental status evaluations.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of cannabis-related disorders, including the differentiation of intoxication delirium from other mental health conditions. This specificity aids in better tracking and treatment of substance use disorders.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of cannabis-related disorders, including the differentiation of intoxication delirium from other mental health conditions. This specificity aids in better tracking and treatment of substance use disorders.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    Substance Abuse and Mental Health Services Administration (SAMHSA)

Coding & Billing References

  • •
    Substance Abuse and Mental Health Services Administration (SAMHSA)

Frequently Asked Questions

What are the key symptoms of cannabis intoxication delirium?

Key symptoms include confusion, altered consciousness, perceptual disturbances, and cognitive impairment, which can significantly impact the patient's ability to function.