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v1.0.0
ICD-10 Guide
DiagnosesFibromyalgia

Fibromyalgia

ICD-10 Coding for Fibromyalgia(M79.7, G89.4)

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

Diagnosis Overview

What is Fibromyalgia?
Essential facts and insights about Fibromyalgia

Key Clinical Considerations:

  • Widespread pain lasting more than 3 months
  • Presence of tender points on physical examination
  • Fatigue, sleep disturbances, and cognitive difficulties

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of symptoms and duration
  • Physical exam findings including tender points
  • Assessment of impact on daily activities

Coding Guidelines

Usage Guidelines & Examples

  • Follow AAPC guidelines for coding fibromyalgia.
  • Common errors include misclassifying fibromyalgia with other pain disorders.

Code Exclusions

Important Exclusions

  • Conditions like chronic fatigue syndrome, myofascial pain syndrome
  • Alternative codes for related pain disorders

Related ICD-10 Codes

Primary Codes
M79.7
Fibromyalgia
Ancillary Codes
F32.9
Differential Codes
M79.1

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Rheumatology

Specialty Applications

  • Adults, particularly women aged 30-60
  • Rheumatology clinics, pain management centers

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

What are the documentation requirements?

Document patient history, physical exam findings, and symptom duration.

What are the billing considerations?

Ensure accurate coding and documentation to support medical necessity.