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M19

⚠ Non-billable (Header)

Other and unspecified osteoarthritis

Diseases of the musculoskeletal system and connective tissue (M00-M99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

direct

Cannot be coded with M19

  • • polyarthritis (M15.-)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

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

Child Codes (4)

M19.0Primary osteoarthritis of other jointsM19.1Post-traumatic osteoarthritis of other jointsM19.2Secondary osteoarthritis of other jointsM19.9Osteoarthritis, unspecified site

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Code Information

CodeM19
BillableNo — Header code
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes11 rule(s)
Excludes23 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)