M13 is the ICD-10 code for Other arthritis. It is a three-character category divided into 4 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block M05–M14 (Inflammatory polyarthropathies) in Chapter XIII, Diseases of the musculoskeletal system and connective tissue.
- Code type
- Category (3 characters)
- Chapter
- XIII · M00–M99
- Classification
- WHO ICD-10, 2019 version
What M13 excludes
Conditions that look similar but belong under another code.
- arthrosis M15-M19
Subcodes of M13
M13 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
M13Annan artrit
DM13Andre artritter
M13Muut niveltulehdukset
M13Sonstige Arthritis
M13Autres arthrites
M13overige artritis
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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