ICD-10-CM diagnosis code
M19.012 Primary osteoarthritis, left shoulder
- Billable
- Yes, a complete code (FY2026)
- Category
- M19 Other arthrosis
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Other codes in M19
52 complete codes in this category.
- M19.011Primary osteoarthritis, right shoulder
- M19.012Primary osteoarthritis, left shoulder
- M19.019Primary osteoarthritis, unspecified shoulder
- M19.021Primary osteoarthritis, right elbow
- M19.022Primary osteoarthritis, left elbow
- M19.029Primary osteoarthritis, unspecified elbow
- M19.031Primary osteoarthritis, right wrist
- M19.032Primary osteoarthritis, left wrist
- M19.039Primary osteoarthritis, unspecified wrist
- M19.041Primary osteoarthritis, right hand
- M19.042Primary osteoarthritis, left hand
- M19.049Primary osteoarthritis, unspecified hand
Documentation tips
- Make sure the note supports every element of the title, “Primary osteoarthritis, left shoulder”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to M19.
The international WHO ICD-10 also has M19, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
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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