Inflammatory polyarthropathies (M05-M14) ICD-10-CM
The M05–M14 section covers inflammatory polyarthropathies with 1,264 ICD-10-CM diagnosis codes, of which 943 are billable in fiscal year 2026. The section is organized into the 9 code ranges listed below.
Code Ranges in This Section 9 ranges · 1,264 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the M05–M14 Code Range
ICD-10 codes M05-M14 specifically identify various types of inflammatory polyarthropathies, which are conditions characterized by inflammation affecting multiple joints and are often related to autoimmune or metabolic causes.
Within these codes, M05 covers rheumatoid arthritis with rheumatoid factor, including detailed subcodes for conditions like Felty's syndrome and rheumatoid arthritis with lung, vasculitis, heart, myopathy, and polyneuropathy involvement. Synonyms such as seropositive rheumatoid arthritis and rheumatoid arthritis with erosion guide precise coding. The M06 series addresses rheumatoid arthritis without rheumatoid factor and related variants including juvenile forms, with distinctions made by affected joint site. Notably, M07 refers to enteropathic arthropathies, arthritis linked with inflammatory bowel diseases, often called enteropathic arthritis. Juvenile arthritis and its subtypes, such as systemic onset and ankylosing spondylitis, are listed under M08. Gout and its variants appear in M10 and M1A, distinguishing idiopathic, lead-induced, drug-induced, and chronic forms, with specific references to tophus presence. M11 includes other crystal arthropathies like hydroxyapatite deposition disease and familial chondrocalcinosis.
Additional categories such as other and unspecified arthropathies (M12), other arthritis (M13), and arthropathies secondary to other diseases (M14), including Charcot's joint, are also covered, facilitating detailed classification. Using synonyms like seronegative rheumatoid arthritis, autoimmune leukopenia, and crystal arthropathy helps coders accurately link clinical terms to these codes for comprehensive documentation of inflammatory polyarthropathies.
Questions About This Page
How many codes are in the M05-M14 range?
The M05-M14 range contains 1,264 ICD-10-CM diagnosis codes in FY 2026. 943 of them are billable, and the rest are category headers that organize the section.
What conditions does M05-M14 cover?
The range covers inflammatory polyarthropathies. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
