All ICD10 Codes
M90Not billable, use a more specific code below

Osteopathies in diseases classified elsewhere

In Other osteopathies (M86-M90), chapter 13: Diseases of the Musculoskeletal System and Connective Tissue

72 billable codes under M90: 24 are a CC; 24 map to HCC 92 (Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

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Instructional notes

Excludes1: not coded here, use a different code

  • osteochondritis, osteomyelitis, and osteopathy (in):
  • cryptococcosis (B45.3)
  • diabetes mellitus (E08-E13 with .69-)
  • gonococcal (A54.43)
  • neurogenic syphilis (A52.11)
  • renal osteodystrophy (N25.0)
  • salmonellosis (A02.24)
  • secondary syphilis (A51.46)
  • syphilis (late) (A52.77)

Also applies, from Other osteopathies (M86-M90)

These notes sit on M86-M90 and apply to every code under it, including M90.

Excludes1: not coded here, use a different code

  • postprocedural osteopathies (M96.-)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers site and laterality, acute injury versus chronic musculoskeletal conditions, 7th characters for pathologic fractures, osteoporosis with or without current fracture, and multisystem inflammatory syndrome.

Read Section I.C.13 (page 60)

All codes under M90

M90 can't be used on a claim. Pick a billable code below; grey headings group them.

M90 MS-DRGs

As the principal diagnosis, all 72 billable codes under M90 group to MS-DRG 553 or 554 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to M90

Notes on these codes point to M90.

  • M87 Excludes1: osteochondropathies (M90-M93)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Bone Diseases

Your bones help you move, give you shape and support your body. They are living tissues that rebuild constantly throughout your life. During childhood and your teens, your body adds new bone faster than it removes old bone. After about age 20, you can lose bone faster than you make bone. To have strong bones when you are young, and to prevent bone loss when you are older, you need to get enough calcium, vitamin D, and exercise. You should also avoid smoking and drinking too much alcohol.

Read more about bone diseases on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.