ICD-10 C44.99
Billable / SpecificOther specified malignant neoplasm of skin, unspecified
About ICD-10-CM C44.99
ICD-10-CM code C44.99 represents Other specified malignant neoplasm of skin, unspecified. This is a billable/specific code in the Neoplasms chapter (block C44). The 2026 edition of ICD-10-CM C44.99 became effective on October 1, 2025.
Medicare LCD Coverage for C44.99
Local Coverage Determinations (LCDs) from CMS MACs that list C44.99 as a covered diagnosis.
Showing top 10 of 463 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing C44.99.
1 Aetna
1 Cigna
5 Medicare
CPT Codes Commonly Billed with C44.99
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 67921 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
- 67915 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
- 67922 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
- 67924 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
- 67911 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
- 67917 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
- 67923 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
- 67914 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
- 67916 CMS LCD: Billing and Coding: Blepharoplasty CMS LCD
Convert C44.99 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 |
|---|---|---|
| C44.99 | 17399 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To C44.99
Other codes in section C43-C44 (Melanoma and other malignant neoplasms of skin).
ICD-10 C44.99, Billing FAQ
Is ICD-10 code C44.99 billable? +
Yes, C44.99 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with C44.99? +
Procedures frequently paired with C44.99 include: 67921, 67915, 67922, 67924, 67911.
What ICD-9 codes does C44.99 map to? +
Per CMS GEMs, C44.99 maps to ICD-9 codes: 17399. 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 May 31, 2026.
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