MCMedicalCodingSoftware
M19

M19: Other and unspecified osteoarthritis

Non-billable headerICD-10-CM

M19 is a non-billable header ICD-10-CM code for other and unspecified osteoarthritis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • polyarthritis (M15.-)

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • arthrosis of spine (M47.-)
  • hallux rigidus (M20.2)
  • osteoarthritis of spine (M47.-)

Other codes that can never be billed with M19

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • M12Other and unspecified arthropathy
  • M12.5Traumatic arthropathy
  • M13Other arthritis
  • M13.8Other specified arthritis
  • M15Polyosteoarthritis

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead M19

4 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.