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v1.0.0
ICD-10 Guide
DiagnosesOpioid Use Disorder Severe

Opioid Use Disorder Severe

ICD-10 Coding for Severe Opioid Use Disorder(F11.20, Z79.891)

PRIMARY SPECIALTYAddiction Medicine
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Opioid Use Disorder Severe?
Essential facts and insights about Severe Opioid Use Disorder

Key Clinical Considerations:

  • Craving for opioids, loss of control over use, continued use despite negative consequences, tolerance, withdrawal symptoms.
  • Urine drug screening, patient self-reports, assessment tools like DSM-5 criteria.
  • Signs of opioid intoxication or withdrawal, changes in physical appearance, track marks, respiratory depression.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of opioid use, severity assessment, treatment plan, progress notes.
  • ICD-10-CM coding terminology such as F11.20 for Opioid Use Disorder, Severe.
  • Example: 'Patient presents with severe opioid use disorder, exhibiting tolerance and withdrawal symptoms.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding severity; use F11.20 for severe cases.
  • Common errors include misclassifying the severity or not documenting withdrawal symptoms.

Code Exclusions

Important Exclusions

  • Acute opioid intoxication (F11.129), opioid withdrawal (F11.23).
  • Alternative codes for other substance use disorders.

Related ICD-10 Codes

Primary Codes
F11.20
Opioid Use Disorder, Severe
Ancillary Codes
F11.23
Differential Codes
F11.10
F11.10
if fewer than 6 DSM-5 criteria are met.
F11.20
F11.20
if the patient meets criteria for opioid dependence.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Addiction Medicine

Specialty Applications

  • Adults with a history of opioid use, patients in addiction treatment programs.
  • Inpatient and outpatient addiction treatment facilities, primary care settings.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Document the severity, treatment history, and any co-occurring disorders.

Billing considerations?

Ensure accurate coding to reflect severity for appropriate reimbursement.