M19.012 Primary osteoarthritis, left shoulder

Billable ICD-10-CM code, FY2026.

Applies from M19 Other and unspecified osteoarthritis

Excludes1 (never code together)

• polyarthritis (M15.-)

Excludes2 (not included here)

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

MS-DRG index

Defines the logic of DRG(s) 553-554 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 715.11 Osteoarthrosis, localized, primary, shoulder region (approximate)

Code annotations containing back-references to M19.012

Back-references to M19

• Type 1 Excludes: M12 Other and unspecified arthropathy ("arthrosis (M15-M19)")
• Type 1 Excludes: M13 Other arthritis ("arthrosis (M15-M19)")
• Type 1 Excludes: M13 Other arthritis ("osteoarthritis (M15-M19)")
• Type 1 Excludes: M13.8 Other specified arthritis ("osteoarthritis (M15-M19)")
• Type 1 Excludes: M15 Polyosteoarthritis ("bilateral involvement of single joint (M16-M19)")

Nearby codes

• M19 Other and unspecified osteoarthritis
• M19.0 Primary osteoarthritis of other joints
• M19.01 Primary osteoarthritis, shoulder
• M19.011 Primary osteoarthritis, right shoulder
• M19.012 Primary osteoarthritis, left shoulder (this code)
• M19.019 Primary osteoarthritis, unspecified shoulder
• M19.02 Primary osteoarthritis, elbow
• M19.021 Primary osteoarthritis, right elbow
• M19.022 Primary osteoarthritis, left elbow
• M19.029 Primary osteoarthritis, unspecified elbow