Q77.9 — Osteochondrodysplasia with defects of growth of tubular bones and spine, unspecified
Is Q77.9 billable?
Yes, but Q77.9 is an unspecified code. Q77.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Q77.9 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 Q77.9 — the more specific alternatives are listed below.
More specific alternatives
Q77.9 at a glance
| Code | Q77.9 |
|---|---|
| Description | Osteochondrodysplasia with defects of growth of tubular bones and spine, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q77.9 group to?
Q77.9 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 Q77.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q77.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Osteochondrodysplasia › with defects of growth of tubular bones and spine
Excludes1 — never code together — inherited from Q77
The conditions below can never be reported together with Q77.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- mucopolysaccharidosis (E76.0-E76.3)
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q77.9, but a patient may have both at the same time. When documentation supports it, Q77.9 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
Excludes2 — not included here — inherited from Q77
The conditions below are not part of Q77.9, but a patient may have both at the same time. When documentation supports it, Q77.9 and the excluded code may both be reported.
- congenital myotonic chondrodystrophy (G71.13)
How long has Q77.9 existed?
Q77.9 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.