M89.8X4 — Other specified disorders of bone, hand

BillableUnspecified

Is M89.8X4 billable?

Yes, but M89.8X4 is an unspecified code. M89.8X4 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, M89.8X4 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting M89.8X4 — the more specific alternatives are listed below.

More specific alternatives

M89.8X4 at a glance

Code	M89.8X4
Description	Other specified disorders of bone, hand
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does M89.8X4 group to?

M89.8X4 sits in MDC 08 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

564Other Musculoskeletal System and Connective Tissue Diagnoses with MCCmedical
565Other Musculoskeletal System and Connective Tissue Diagnoses with CCmedical
566Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCCmedical

How is M89.8X4 listed in the Alphabetic Index?

The Alphabetic Index lists these routes under M89.8X, the nearest indexed parent of M89.8X4. Use them to find the family, then select the specific code.

Ossification › subperiosteal, post-traumatic
Disorder › bone › specified type NEC (of)
Hyperostosis › cortical › infantile (monomelic)

Excludes1 — never code together — inherited from M86-M90

The conditions below can never be reported together with M89.8X4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

postprocedural osteopathies (M96.-)

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M89.8X4, but a patient may have both at the same time. When documentation supports it, M89.8X4 and the excluded code may both be reported.

arthropathic psoriasis (L40.5-)
certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
compartment syndrome (traumatic) (T79.A-)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

How long has M89.8X4 existed?

M89.8X4 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.