M89.8 – Other specified disorders of bone

ICD-10-CM 2027 diagnosis code · Other osteopathies

Non-billable header

ICD-10-CM code M89.8

Code: M89.8 (claims format: M898)
Description: Other specified disorders of bone
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M86-M90 Other osteopathies
Parent codes: M89

Billable codes under M89.8

M89.8 is a header code and cannot be used on claims. Choose the most specific code:

M89.8X – Other specified disorders of boneHeader (more codes below)

Notes for M89.8

Applicable to:

Infantile cortical hyperostoses
Post-traumatic subperiosteal ossification

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block M86-M90

Excludes1 (not coded here):

postprocedural osteopathies (M96.-)

Related codes in M89

M89.0 – AlgoneurodystrophyHeader
M89.1 – Physeal arrestHeader
M89.2 – Other disorders of bone development and growthHeader
M89.3 – Hypertrophy of boneHeader
M89.4 – Other hypertrophic osteoarthropathyHeader
M89.5 – OsteolysisHeader
M89.6 – Osteopathy after poliomyelitisHeader
M89.7 – Major osseous defectHeader
M89.9 – Disorder of bone, unspecifiedBillable

Frequently asked questions

What is ICD-10 code M89.8?

M89.8 is the ICD-10-CM code for other specified disorders of bone, in the block M86-M90 (Other osteopathies).

Is M89.8 a billable code?

No. M89.8 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M89.8 belong to?

It belongs to category M89 – Other disorders of bone.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.