ICDcodes.org
FY2027

D04.9 — Carcinoma in situ of skin, unspecified

BillableUnspecified

Is D04.9 billable?

Yes, but D04.9 is an unspecified code. D04.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, D04.9 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 D04.9 — the more specific alternatives are listed below.

D04.9 at a glance

CodeD04.9
DescriptionCarcinoma in situ of skin, unspecified
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does D04.9 group to?

D04.9 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 D04.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to D04.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Adenocarcinoma › apocrine › in situ › unspecified site

Excludes1 — never code together — inherited from D04

The conditions below can never be reported together with D04.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • erythroplasia of Queyrat (penis) NOS (D07.4)
  • melanoma in situ (D03.-)

How long has D04.9 existed?

D04.9 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 D04 family? (9)