ICD-10 C53.1
Billable / Specific HCC v28: 11Malignant neoplasm of exocervix
About ICD-10-CM C53.1
ICD-10-CM code C53.1 represents Malignant neoplasm of exocervix. This is a billable/specific code in the chapter (block C53). The 2026 edition of ICD-10-CM C53.1 became effective on October 1, 2025.
Coding Tips for C53.1
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
C53.1 is a CMS-HCC v28 risk-adjustment code (category 11). To count for the patient Risk Adjustment Factor (RAF), document the diagnosis with MEAT language each calendar year: Monitored, Evaluated, Assessed, Treated. A diagnosis on the problem list alone does not satisfy CMS RADV audit standards. Include the diagnosis in the assessment with current status and current treatment plan.
Medicare Advantage HCC Impact
Capture this diagnosis annually for accurate risk adjustment. Missed HCC captures are the #1 revenue leak in Medicare Advantage risk programs.
Medicare LCD Coverage for C53.1
Local Coverage Determinations (LCDs) from CMS MACs that list C53.1 as a covered diagnosis.
Showing top 10 of 806 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing C53.1.
5 Medicare
CPT Codes Commonly Billed with C53.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- C9726 CMS LCD: Billing and Coding: Intraoperative Radiation Therapy CMS LCD
- 19294 CMS LCD: Billing and Coding: Intraoperative Radiation Therapy CMS LCD
- 76145 CMS LCD: Billing and Coding: Intraoperative Radiation Therapy CMS LCD
- 77469 CMS LCD: Billing and Coding: Intraoperative Radiation Therapy CMS LCD
- 77425 CMS LCD: Billing and Coding: Intraoperative Radiation Therapy CMS LCD
- 77424 CMS LCD: Billing and Coding: Intraoperative Radiation Therapy CMS LCD
Convert C53.1 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 |
|---|---|---|
| C53.1 | 1801 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To C53.1
Other codes in section C51-C58 (Malignant neoplasms of female genital organs).
ICD-10 C53.1, Billing FAQ
Is ICD-10 code C53.1 billable? +
Yes, C53.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
Does C53.1 affect Medicare Advantage HCC risk adjustment? +
Yes. C53.1 maps to CMS-HCC v28 category 11. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What CPT codes are commonly billed with C53.1? +
Procedures frequently paired with C53.1 include: C9726, 19294, 76145, 77469, 77425.
What ICD-9 codes does C53.1 map to? +
Per CMS GEMs, C53.1 maps to ICD-9 codes: 1801. 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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