ICD-10-CM 2027
ICD-10 code for relapsing polychondritis
From the official ICD-10-CM alphabetic index entry “Polychondritis (atrophic) (chronic) › relapsing”. Page updated September 29, 2026.
About coding relapsing polychondritis
The ICD-10-CM code for relapsing polychondritis is M94.1 (Relapsing polychondritis).
Within M94 (other disorders of cartilage), M94.1 is specifically for relapsing polychondritis. Related codes cover Chondrocostal junction syndrome [Tietze] (M94.0), Chondromalacia (M94.2), Chondrolysis (M94.3), other specified disorders of cartilage (M94.8) and disorder of cartilage, unspecified (M94.9).
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 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC, relative weight 1.4908), DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC, relative weight 0.9783) and DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC, relative weight 0.7378), 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 relapsing polychondritis ICD-10 codes
What is the ICD-10 code for relapsing polychondritis?
- M94.1 — Relapsing polychondritis.
Is M94.1 billable?
- Yes. M94.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M94.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M94.1 as a principal diagnosis.
Is M94.1 a CC or MCC?
- No. M94.1 is neither a CC nor an MCC under MS-DRG v44.0.