Q76.9 — Congenital malformation of bony thorax, unspecified

BillableUnspecifiedCC

Is Q76.9 billable?

Yes, but Q76.9 is an unspecified code. Q76.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Q76.9 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 Q76.9 — the more specific alternatives are listed below.

More specific alternatives

Q76.9 at a glance

Code	Q76.9
Description	Congenital malformation of bony thorax, unspecified
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does Q76.9 group to?

Q76.9 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

As a secondary diagnosis, Q76.9 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is Q76.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to Q76.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

Malformation › thorax, bony (congenital)
Anomaly, anomalous › chest wall › bones (congenital) (unspecified type)
Anomaly, anomalous › thorax › bony (congenital) (unspecified type)

Excludes1 — never code together — inherited from Q76

The conditions below can never be reported together with Q76.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

congenital musculoskeletal deformities of spine and chest (Q67.5-Q67.8)

Excludes2 — not included here — inherited from Chapter 17

The conditions below are not part of Q76.9, but a patient may have both at the same time. When documentation supports it, Q76.9 and the excluded code may both be reported.

inborn errors of metabolism (E70-E88)

How long has Q76.9 existed?

Q76.9 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.