Q82.9 — Congenital malformation of skin, unspecified
Is Q82.9 billable?
Yes, but Q82.9 is an unspecified code. Q82.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Q82.9 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 Q82.9 — the more specific alternatives are listed below.
Q82.9 at a glance
| Code | Q82.9 |
|---|---|
| Description | Congenital malformation of skin, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q82.9 group to?
Q82.9 sits in MDC 09 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 606Minor Skin Disorders with MCCmedical
- 607Minor Skin Disorders without MCCmedical
How is Q82.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q82.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Anomaly, anomalous › ectodermal (congenital) (unspecified type)
- Anomaly, anomalous › sebaceous gland (congenital) (unspecified type)
- Anomaly, anomalous › skin (congenital) (unspecified type)
- Defect, defective › ectodermal, congenital
- Deformity › skin
- Malformation › skin (congenital)
Excludes1 — never code together — inherited from Q82
The conditions below can never be reported together with Q82.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q82.9, but a patient may have both at the same time. When documentation supports it, Q82.9 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
How long has Q82.9 existed?
Q82.9 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.