ICDcodes.org
FY2027

M84.9 — Disorder of continuity of bone, unspecified

BillableUnspecified

Is M84.9 billable?

Yes, but M84.9 is an unspecified code. M84.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, M84.9 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 M84.9 — the more specific alternatives are listed below.

M84.9 at a glance

CodeM84.9
DescriptionDisorder of continuity of bone, unspecified
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does M84.9 group to?

M84.9 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 M84.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to M84.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Disorder › bone › continuity (of)

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M84.9, but a patient may have both at the same time. When documentation supports it, M84.9 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)

Excludes2 — not included here — inherited from M84

The conditions below are not part of M84.9, but a patient may have both at the same time. When documentation supports it, M84.9 and the excluded code may both be reported.

  • traumatic fracture of bone-see fracture, by site

How long has M84.9 existed?

M84.9 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.

What other codes are in the M84 family? (6)