ICD-10 C44.42
Billable / SpecificSquamous cell carcinoma of skin of scalp and neck
About ICD-10-CM C44.42
ICD-10-CM code C44.42 represents Squamous cell carcinoma of skin of scalp and neck. This is a billable/specific code in the Neoplasms chapter (block C44). The 2026 edition of ICD-10-CM C44.42 became effective on October 1, 2025.
Medicare LCD Coverage for C44.42
Local Coverage Determinations (LCDs) from CMS MACs that list C44.42 as a covered diagnosis.
Showing top 10 of 1,147 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing C44.42.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with C44.42
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 77336 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- 77370 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- 77439 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- 77436 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- 77437 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- 77285 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- 0394T CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- 77280 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- G6001 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
- 77300 CMS LCD: Billing and Coding: Superficial Radiation Therapy (SRT) for the Treatment of Nonmelanoma Skin Cancers (NMSC) CMS LCD
Convert C44.42 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 |
|---|---|---|
| C44.42 | 17342 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To C44.42
Other codes in section C43-C44 (Melanoma and other malignant neoplasms of skin).
ICD-10 C44.42, Billing FAQ
Is ICD-10 code C44.42 billable? +
Yes, C44.42 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 C44.42? +
Procedures frequently paired with C44.42 include: 77336, 77370, 77439, 77436, 77437.
What ICD-9 codes does C44.42 map to? +
Per CMS GEMs, C44.42 maps to ICD-9 codes: 17342. 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 July 16, 2026.
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