M05 is the ICD-10 code for Seropositive rheumatoid arthritis. It is a three-character category divided into 6 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 M05 excludes
Conditions that look similar but belong under another code.
Subcodes of M05
M05 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DM05Seropositiv leddegigt
M05Seropositiivinen nivelreuma
M05Seropositive chronische Polyarthritis
M05Arthrite rhumatoïde séropositive
M05seropositieve reumatoïde-artritis
Listed through more specific codes:
- M05.AAbnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis
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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