ICD-10-CM
ICD-10 code for Rheumatism: M79.0
The ICD-10-CM index points "Rheumatism" to M79.0, Rheumatism, unspecified. M79.0 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
More specific codes in M79
A header groups codes and is not billed. A billable code is one you can report.
- M79Other and unspecified soft tissue disorders, not elsewhere classifiedHeader
- M79.0Rheumatism, unspecifiedBillable
- M79.1MyalgiaHeader
- M79.10Myalgia, unspecified siteBillable
- M79.11Myalgia of mastication muscleBillable
- M79.12Myalgia of auxiliary muscles, head and neckBillable
- M79.18Myalgia, other siteBillable
- M79.2Neuralgia and neuritis, unspecifiedBillable
- M79.3Panniculitis, unspecifiedBillable
- M79.4Hypertrophy of (infrapatellar) fat padBillable
- M79.5Residual foreign body in soft tissueBillable
- M79.6Pain in limb, hand, foot, fingers and toesHeader
- M79.60Pain in limb, unspecifiedHeader
- M79.62Pain in upper armHeader
- M79.63Pain in forearmHeader
- M79.64Pain in hand and fingersHeader
- M79.65Pain in thighHeader
- M79.66Pain in lower legHeader
- M79.67Pain in foot and toesHeader
- M79.7FibromyalgiaBillable
- M79.8Other specified soft tissue disordersHeader
- M79.81Nontraumatic hematoma of soft tissueBillable
- M79.89Other specified soft tissue disordersBillable
- M79.9Soft tissue disorder, unspecifiedBillable
- M79.ANontraumatic compartment syndromeHeader
- M79.A1Nontraumatic compartment syndrome of upper extremityHeader
- M79.A2Nontraumatic compartment syndrome of lower extremityHeader
- M79.A3Nontraumatic compartment syndrome of abdomenBillable
- M79.A9Nontraumatic compartment syndrome of other sitesBillable
Excludes1
Excludes1 means these codes are not reported together.
From M79. A note on a category applies to every code under it.
Related conditions
Related pages
- M79.0 code detailsNotes, nearby codes, CMS-HCC group
- Category M79Every code under it
- Chapter 13Diseases of the musculoskeletal system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Rheumatism?
The ICD-10-CM index points "Rheumatism" to M79.0, Rheumatism, unspecified. M79.0 is a billable code.
Is M79.0 billable?
Yes. M79.0 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to M79.0?
The CDC tabular list gives 4 Excludes1 notes (not coded together) for M79.0 and the categories above it. They are listed on this page.
What chapter is M79.0 in?
Chapter 13. Diseases of the musculoskeletal system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.