Question 1

What is ICD-10 code C44.92?

Accepted Answer

C44.92 is the ICD-10-CM diagnosis code for squamous cell carcinoma of skin, unspecified. A type of skin cancer that develops from squamous cells (flat cells on the skin surface) when the specific location on the body is not documented. C44.92 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering melanoma and other malignant neoplasms of skin (c43-c44).

C44.92 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

Use this code only when the anatomical site of the squamous cell carcinoma is unknown or unspecified; if site is known, use more specific C44 subcodes.

Question 2

Is C44.92 an HCC code?

Accepted Answer

C44.92 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

Question 3

Is C44.92 billable?

Accepted Answer

Yes. C44.92 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. C44.92 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Question 4

Which HCC does C44.92 map to under V28?

Accepted Answer

C44.92 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

Question 5

What RAF reference is published for C44.92?

Accepted Answer

C44.92 has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

Question 6

What is the V28 vs V24 difference for C44.92?

Accepted Answer

C44.92 has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

Question 7

What documentation supports C44.92?

Accepted Answer

Use this code only when the anatomical site of the squamous cell carcinoma is unknown or unspecified; if site is known, use more specific C44 subcodes Verify documentation for any mention of location (face, ear, lip, etc.) before assigning this unspecified code C44.92 is not a CMS-HCC V28 payment code in the verified current source, so MEAT is not the payment hook. Documentation still has to support the diagnosis if you report it.

Question 8

Can C44.92 be a primary diagnosis?

Accepted Answer

Yes. C44.92 carries no code-first instruction in the FY2026 tabular, so it can be the first-listed diagnosis when it is the condition chiefly responsible for the encounter and the note supports it, and it can also be reported as a secondary diagnosis. For risk adjustment the order does not matter; the V28 category is the same either way.

Question 9

Which codes cannot be reported with C44.92?

Accepted Answer

The Excludes1 note that applies to C44.92 lists Kaposi's sarcoma of skin (C46.0); malignant melanoma of skin (C43.-); malignant neoplasm of skin of genital organs (C51-C52, C60.-, C63.2); Merkel cell carcinoma (C4A.-). An Excludes1 condition is not reported together with C44.92; report one or the other, unless the two conditions are unrelated, which the ICD-10-CM Official Guidelines (Section I.A.12.a) allow.

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C44.92

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C44.92 ICD-10-CM Code: Squamous cell carcinoma of skin, unspecified

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C44.92

Is C44.92 an HCC code?

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What This Code Means

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Also searched as

Work C44.92 in HCC Buddy