ICD-10 C44.590
Billable / SpecificOther specified malignant neoplasm of anal skin
About ICD-10-CM C44.590
ICD-10-CM code C44.590 represents Other specified malignant neoplasm of anal skin. This is a billable/specific code in the Neoplasms chapter (block C44). The 2026 edition of ICD-10-CM C44.590 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under C44.590. Per CMS ICD-10-CM Tabular 2026.
- Other specified malignant neoplasm of anal margin
- Other specified malignant neoplasm of perianal skin
Medicare LCD Coverage for C44.590
Local Coverage Determinations (LCDs) from CMS MACs that list C44.590 as a covered diagnosis.
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Commercial Payer Coverage
Coverage policies from major commercial payers referencing C44.590.
5 Medicare
CPT Codes Commonly Billed with C44.590
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert C44.590 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| C44.590 | 17359 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To C44.590
Other codes in section C43-C44 (Melanoma and other malignant neoplasms of skin).
ICD-10 C44.590, Billing FAQ
Is ICD-10 code C44.590 billable? +
Yes, C44.590 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to C44.590? +
ICD-10 C44.590 includes: Other specified malignant neoplasm of anal margin; Other specified malignant neoplasm of perianal skin.
What ICD-9 codes does C44.590 map to? +
Per CMS GEMs, C44.590 maps to ICD-9 codes: 17359. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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