ICD-10-CM 2027 diagnosis code
M90.552Osteonecrosis in diseases classified elsewhere, left thigh
M90.552 is a valid, billable ICD-10-CM code for osteonecrosis in diseases classified elsewhere, left thigh. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About M90.552
M90.552 is the ICD-10-CM diagnosis code for osteonecrosis in diseases classified elsewhere, left thigh. It belongs to category M90 (Osteopathies in diseases classified elsewhere), block M86-M90 (other osteopathies) 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 M90.55 (osteonecrosis in diseases classified elsewhere, thigh), M90.552 is specifically for osteonecrosis in diseases classified elsewhere, left thigh. Related codes cover right thigh (M90.551) and unspecified thigh (M90.559).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
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 is a manifestation code, so it describes the effect of an underlying disease and can't be the principal diagnosis. Code the underlying condition first.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 731.8 (other bone involvement in diseases classified elsewhere) and 733.42 (aseptic necrosis of head and neck of femur).
Notes that apply from higher levels
Instructions written at a parent level also apply to M90.552.
Broader instructions also apply from M86-M90 Other osteopathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue
ICD-9-CM equivalent
Converter →- 731.8Other bone involvement in diseases classified elsewhereapproximate, combination
- 733.42Aseptic necrosis of head and neck of femurapproximate, combination
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about M90.552
Is M90.552 billable?
- Yes. M90.552 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M90.552 be used as a principal diagnosis?
- No. It is a manifestation code, so it describes the effect of an underlying disease and can't be the principal diagnosis. Code the underlying condition first.
Is M90.552 a CC or MCC?
- M90.552 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does M90.552 group to?
- M90.552 is used in the MS-DRG v44.0 logic for MS-DRG 553 (Bone Diseases and Arthropathies with MCC) and MS-DRG 554 (Bone Diseases and Arthropathies without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for M90.552?
- The CMS General Equivalence Mappings map M90.552 to ICD-9-CM 731.8 and 733.42.