M31.7 is the ICD-10 code for Microscopic polyangiitis. It is a four-character subcategory of M31 (Other necrotizing vasculopathies), the most specific level in the WHO edition. It belongs to the block M30–M36 (Systemic connective tissue disorders) in Chapter XIII, Diseases of the musculoskeletal system and connective tissue.
- Code type
- Subcategory (4 characters)
- Chapter
- XIII · M00–M99
- Classification
- WHO ICD-10, 2019 version
What M31.7 includes
Conditions and terms that are coded here.
- Microscopic polyarteritis
What M31.7 excludes
Conditions that look similar but belong under another code.
- polyarteritis nodosa M30.0
M31.7 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
M31.7Mikroskopisk polyangiitt
DM317Mikroskopisk polyangiitis
M31.7Mikroskooppinen polyangiitti
M31.7Mikroskopische Polyangiitis
M31.7Polyangéite microscopique
M31.7microscopische polyangiitis
M31.7Microscopic polyangiitis
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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