ICD-10-CM 2027
ICD-10 code for Pierson's osteochondrosis
From the official ICD-10-CM alphabetic index entry “Osteochondrosis › Pierson's”. Page updated September 29, 2026.
About coding Pierson's osteochondrosis
The ICD-10-CM code for Pierson's osteochondrosis is M91.0 (Juvenile osteochondrosis of pelvis).
Within M91 (juvenile osteochondrosis of hip and pelvis), M91.0 is specifically for juvenile osteochondrosis of pelvis. Related codes cover juvenile osteochondrosis of head of femur [Legg-Calve-Perthes] (M91.1), coxa plana (M91.2), Pseudocoxalgia (M91.3), coxa magna (M91.4), other juvenile osteochondrosis of hip and pelvis (M91.8) and unspecified (M91.9).
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 Pierson's osteochondrosis ICD-10 codes
What is the ICD-10 code for Pierson's osteochondrosis?
- M91.0 — Juvenile osteochondrosis of pelvis.
Is M91.0 billable?
- Yes. M91.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M91.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M91.0 as a principal diagnosis.
Is M91.0 a CC or MCC?
- No. M91.0 is neither a CC nor an MCC under MS-DRG v44.0.