All ICD10 Codes

M90.55

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Osteonecrosis in diseases classified elsewhere, thigh

Use a more specific code (3 billable)
M90.551Osteonecrosis in diseases classified elsewhere, right thighM90.552Osteonecrosis in diseases classified elsewhere, left thighM90.559Osteonecrosis in diseases classified elsewhere, unspecified thigh
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).
General instructions are available for the parent sections:
View CH13 NotesView M86-M90 NotesView M90 NotesView M90.5 Notes

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M86-M90Other osteopathies (M86-M90)
M90Osteopathies in diseases classified elsewhere
M90.5Osteonecrosis in diseases classified elsewhere
M90.55Osteonecrosis in diseases classified elsewhere, thighNot billable
M90.551Osteonecrosis in diseases classified elsewhere, right thighBillable
M90.552Osteonecrosis in diseases classified elsewhere, left thighBillable
M90.559Osteonecrosis in diseases classified elsewhere, unspecified thighBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M90.55:

subcategoryM90.5
Osteonecrosis in diseases classified elsewhere
View context instructions
categoryM90
Osteopathies in diseases classified elsewhere
View context instructions
blockM86-M90
Other osteopathies (M86-M90)
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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