Q24.6 — Congenital heart block
Is Q24.6 billable?
Yes — Q24.6 is billable for FY2027. Q24.6 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Q24.6 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Q24.6 at a glance
| Code | Q24.6 |
|---|---|
| Description | Congenital heart block |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q24.6 group to?
Q24.6 sits in MDC 05 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.
- 308Cardiac Arrhythmia and Conduction Disorders with MCCmedical
- 309Cardiac Arrhythmia and Conduction Disorders with CCmedical
- 310Cardiac Arrhythmia and Conduction Disorders without CC/MCCmedical
As a secondary diagnosis, Q24.6 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.
How is Q24.6 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q24.6. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Block, blocked › atrioventricular › congenital
- Block, blocked › heart › congenital
- Block, blocked › atrioventricular › complete › congenital
Excludes1 — never code together — inherited from Q24
The conditions below can never be reported together with Q24.6 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- endocardial fibroelastosis (I42.4)
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q24.6, but a patient may have both at the same time. When documentation supports it, Q24.6 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
How long has Q24.6 existed?
Q24.6 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.