ICD-10-CM category
M13 Other arthritis
M13 is a category, not a billable code. Report one of the 47 complete codes below.
M13.0…
1 code
M13.1…
22 codes
- M13.10Monoarthritis, not elsewhere classified, unspecified site
- M13.111Monoarthritis, not elsewhere classified, right shoulder
- M13.112Monoarthritis, not elsewhere classified, left shoulder
- M13.119Monoarthritis, not elsewhere classified, unspecified shoulder
- M13.121Monoarthritis, not elsewhere classified, right elbow
- M13.122Monoarthritis, not elsewhere classified, left elbow
- M13.129Monoarthritis, not elsewhere classified, unspecified elbow
- M13.131Monoarthritis, not elsewhere classified, right wrist
- M13.132Monoarthritis, not elsewhere classified, left wrist
- M13.139Monoarthritis, not elsewhere classified, unspecified wrist
- M13.141Monoarthritis, not elsewhere classified, right hand
- M13.142Monoarthritis, not elsewhere classified, left hand
- M13.149Monoarthritis, not elsewhere classified, unspecified hand
- M13.151Monoarthritis, not elsewhere classified, right hip
- M13.152Monoarthritis, not elsewhere classified, left hip
- M13.159Monoarthritis, not elsewhere classified, unspecified hip
- M13.161Monoarthritis, not elsewhere classified, right knee
- M13.162Monoarthritis, not elsewhere classified, left knee
- M13.169Monoarthritis, not elsewhere classified, unspecified knee
- M13.171Monoarthritis, not elsewhere classified, right ankle and foot
- M13.172Monoarthritis, not elsewhere classified, left ankle and foot
- M13.179Monoarthritis, not elsewhere classified, unspecified ankle and foot
M13.8…
24 codes
- M13.80Other specified arthritis, unspecified site
- M13.811Other specified arthritis, right shoulder
- M13.812Other specified arthritis, left shoulder
- M13.819Other specified arthritis, unspecified shoulder
- M13.821Other specified arthritis, right elbow
- M13.822Other specified arthritis, left elbow
- M13.829Other specified arthritis, unspecified elbow
- M13.831Other specified arthritis, right wrist
- M13.832Other specified arthritis, left wrist
- M13.839Other specified arthritis, unspecified wrist
- M13.841Other specified arthritis, right hand
- M13.842Other specified arthritis, left hand
- M13.849Other specified arthritis, unspecified hand
- M13.851Other specified arthritis, right hip
- M13.852Other specified arthritis, left hip
- M13.859Other specified arthritis, unspecified hip
- M13.861Other specified arthritis, right knee
- M13.862Other specified arthritis, left knee
- M13.869Other specified arthritis, unspecified knee
- M13.871Other specified arthritis, right ankle and foot
- M13.872Other specified arthritis, left ankle and foot
- M13.879Other specified arthritis, unspecified ankle and foot
- M13.88Other specified arthritis, other site
- M13.89Other specified arthritis, multiple sites
Outside the US? M13 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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