M79.7 ICD-10-CM Code: Fibromyalgia

M79.7 is the billable ICD-10-CM code for “Fibromyalgia” in the FY 2027 U.S. code set, effective Oct 1, 2026.

Official description

M79.7

Fibromyalgia

ICD-10-CM diagnosis code · United States clinical modification

Where M79.7 sits

  1. 1

    Chapter 13

    Diseases of the musculoskeletal system and connective tissue (M00-M99)

  2. 2

    Section

    Other soft tissue disorders (M70-M79)

  3. 3

    Category M79

    Other and unspecified soft tissue disorders, not elsewhere classified

  4. 4

    Code M79.7

    Fibromyalgia

Notes for this code

Inclusion terms

  • Fibromyositis
  • Fibrositis
  • Myofibrositis

Code first

No “code first” instruction is listed for M79.7.

Use additional code

No “use additional code” instruction is listed for M79.7.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for M79.7.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for M79.7.

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Frequently asked questions

What does ICD-10-CM code M79.7 mean?

M79.7 is the FY 2027 U.S. ICD-10-CM code for “Fibromyalgia.”

Is M79.7 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, M79.7 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is M79.7 located in ICD-10-CM?

M79.7 is listed in Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99), within Other soft tissue disorders (M70-M79) (M70–M79), under category M79, Other and unspecified soft tissue disorders, not elsewhere classified.

What coding notes are listed for M79.7?

Its listed inclusion terms are Fibromyositis; Fibrositis; Myofibrositis. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.