ICD-10-CM diagnosis code
M88.821 Osteitis deformans of right upper arm
- Billable
- Yes, a complete code (FY2026)
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Other codes in M88
26 complete codes in this category.
- M88.0Osteitis deformans of skull
- M88.1Osteitis deformans of vertebrae
- M88.811Osteitis deformans of right shoulder
- M88.812Osteitis deformans of left shoulder
- M88.819Osteitis deformans of unspecified shoulder
- M88.821Osteitis deformans of right upper arm
- M88.822Osteitis deformans of left upper arm
- M88.829Osteitis deformans of unspecified upper arm
- M88.831Osteitis deformans of right forearm
- M88.832Osteitis deformans of left forearm
- M88.839Osteitis deformans of unspecified forearm
- M88.841Osteitis deformans of right hand
Documentation tips
- Make sure the note supports every element of the title, “Osteitis deformans of right upper arm”: 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 M88.
The international WHO ICD-10 also has M88, 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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