M93.033Acute on chronic slipped upper femoral epiphysis, stable (nontraumatic), unspecified hip

M93.033 is the ICD-10-CM diagnosis code for acute on chronic slipped upper femoral epiphysis, stable (nontraumatic), unspecified hip. It belongs to category M93 (other osteochondropathies), block M91-M94 (Chondropathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within M93.03, choose M93.033 (unspecified hip) only when documentation doesn't support a more specific option: right hip (M93.031), left hip (M93.032) and bilateral hips (M93.034).

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.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2023 (title revised).

Before ICD-10, this condition was coded in ICD-9-CM as 732.2 (nontraumatic slipped upper femoral epiphysis).