ICD-10-CM 2027
ICD-10 code for primary polyarthrosis
From the official ICD-10-CM alphabetic index entry “Polyarthrosis › primary”. Page updated September 29, 2026.
About coding primary polyarthrosis
The ICD-10-CM code for primary polyarthrosis is M15.0 (Primary generalized (osteo)arthritis).
Within M15 (polyosteoarthritis), M15.0 is specifically for primary generalized (osteo)arthritis. Related codes cover Heberden's nodes (with arthropathy) (M15.1), Bouchard's nodes (with arthropathy) (M15.2), secondary multiple arthritis (M15.3), Erosive (osteo)arthritis (M15.4), other polyosteoarthritis (M15.8) and unspecified (M15.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 553 (Bone Diseases and Arthropathies with MCC, relative weight 1.2494) and DRG 554 (Bone Diseases and Arthropathies without MCC, relative weight 0.8331), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about primary polyarthrosis ICD-10 codes
What is the ICD-10 code for primary polyarthrosis?
- M15.0 — Primary generalized (osteo)arthritis.
Is M15.0 billable?
- Yes. M15.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M15.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M15.0 as a principal diagnosis.
Is M15.0 a CC or MCC?
- No. M15.0 is neither a CC nor an MCC under MS-DRG v44.0.