ICD-10-CM
ICD-10 code for Microscopic polyangiitis: M31.7
The closest CDC title for "Microscopic polyangiitis" is M31.7, Microscopic polyangiitis. M31.7 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under M31, then other CDC titles that name microscopic polyangiitis
A header groups codes and is not billed. A billable code is one you can report.
- M31Other necrotizing vasculopathiesHeader
- M31.0Hypersensitivity angiitisBillable
- M31.1Thrombotic microangiopathyHeader
- M31.10Thrombotic microangiopathy, unspecifiedBillable
- M31.11Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]Billable
- M31.19Other thrombotic microangiopathyBillable
- M31.2Lethal midline granulomaBillable
- M31.3Wegener's granulomatosisHeader
- M31.30Wegener's granulomatosis without renal involvementBillable
- M31.31Wegener's granulomatosis with renal involvementBillable
- M31.4Aortic arch syndrome [Takayasu]Billable
- M31.5Giant cell arteritis with polymyalgia rheumaticaBillable
- M31.6Other giant cell arteritisBillable
- M31.7Microscopic polyangiitisBillable
- M31.8Other specified necrotizing vasculopathiesBillable
- M31.9Necrotizing vasculopathy, unspecifiedBillable
Excludes1
Excludes1 means these codes are not reported together.
Related conditions
Related pages
- M31.7 code detailsNotes, nearby codes, CMS-HCC group
- Category M31Every 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 Microscopic polyangiitis?
The closest CDC title for "Microscopic polyangiitis" is M31.7, Microscopic polyangiitis. M31.7 is a billable code.
Is M31.7 billable?
Yes. M31.7 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 M31.7?
The CDC tabular list gives 1 Excludes1 note (not coded together) for M31.7 and the categories above it. They are listed on this page.
What chapter is M31.7 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.