ICD-10-CM 2027
ICD-10 code for Costochondritis
From the official ICD-10-CM alphabetic index entry “Costochondritis”. Page updated September 29, 2026.
About coding Costochondritis
The ICD-10-CM code for Costochondritis is M94.0 (Chondrocostal junction syndrome [Tietze]).
Within M94 (other disorders of cartilage), M94.0 is specifically for Chondrocostal junction syndrome [Tietze]. Related codes cover relapsing polychondritis (M94.1), 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 205 (Other Respiratory System Diagnoses with MCC, relative weight 1.8244) and DRG 206 (Other Respiratory System Diagnoses without MCC, relative weight 0.9257), in MDC 04 (Diseases and Disorders of the Respiratory System), 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 Costochondritis ICD-10 codes
What is the ICD-10 code for Costochondritis?
- M94.0 — Chondrocostal junction syndrome [Tietze].
Is M94.0 billable?
- Yes. M94.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M94.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M94.0 as a principal diagnosis.
Is M94.0 a CC or MCC?
- No. M94.0 is neither a CC nor an MCC under MS-DRG v44.0.