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ICD-10 Guide
ICD-10 CodesF18.221

F18.221

Billable

Inhalant dependence with intoxication delirium

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

Code Description

ICD-10 F18.221 is a billable code used to indicate a diagnosis of inhalant dependence with intoxication delirium.

Key Diagnostic Point:

Inhalant dependence with intoxication delirium is characterized by a compulsive pattern of inhalant use leading to significant impairment or distress. Inhalants, which include a variety of substances such as solvents, aerosols, and gases, can produce psychoactive effects when inhaled. Dependence is marked by tolerance, withdrawal symptoms, and a strong desire to use the substance. Intoxication delirium refers to a state of confusion, altered consciousness, and cognitive impairment that occurs during or shortly after inhalant use. Symptoms may include disorientation, hallucinations, and severe agitation. The condition poses serious health risks, including neurological damage, respiratory issues, and potential fatality due to asphyxiation or cardiac arrest. Treatment typically involves detoxification, behavioral therapies, and support groups, focusing on both the physical and psychological aspects of addiction. Early intervention is crucial to prevent long-term consequences and improve recovery outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between intoxication and withdrawal symptoms
  • Identifying the severity of dependence
  • Documenting the presence of delirium accurately
  • Understanding the nuances of inhalant use versus other substance use disorders

Audit Risk Factors

  • Inadequate documentation of intoxication symptoms
  • Failure to document the history of substance use
  • Lack of evidence for delirium diagnosis
  • Misclassification of inhalant use as a different substance use disorder

Specialty Focus

Medical Specialties

Addiction Medicine

Documentation Requirements

Comprehensive history of substance use, mental health evaluations, and treatment plans.

Common Clinical Scenarios

Patients presenting with acute intoxication, withdrawal symptoms, or co-occurring mental health disorders.

Billing Considerations

Accurate assessment of cognitive function and safety planning for patients at risk of self-harm.

Psychiatry

Documentation Requirements

Detailed psychiatric evaluations, including mental status exams and risk assessments.

Common Clinical Scenarios

Patients experiencing severe cognitive impairment or psychotic symptoms due to inhalant use.

Billing Considerations

Differentiating between primary psychiatric disorders and substance-induced conditions.

Coding Guidelines

Inclusion Criteria

Use F18.221 When
  • According to ICD
  • 10 guidelines, F18
  • 221 should be used when there is evidence of inhalant dependence accompanied by intoxication delirium
  • Documentation must support the diagnosis, including clinical assessments and treatment plans

Exclusion Criteria

Do NOT use F18.221 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

H0001CPT Code

Assessment of substance use disorder

Clinical Scenario

Used during initial evaluation of a patient with suspected inhalant dependence.

Documentation Requirements

Comprehensive assessment notes including history and mental status.

Specialty Considerations

Addiction specialists should ensure thorough documentation of substance use history.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of inhalant dependence, improving the ability to track and treat this condition effectively. It has also enhanced the granularity of data for research and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of inhalant dependence, improving the ability to track and treat this condition effectively. It has also enhanced the granularity of data for research and treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of inhalant dependence, improving the ability to track and treat this condition effectively. It has also enhanced the granularity of data for research and treatment outcomes.

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 primary symptoms of inhalant dependence?

Primary symptoms include a strong craving for inhalants, tolerance to their effects, withdrawal symptoms when not using, and cognitive impairments during intoxication.