ICD-10 B18.2
Billable / Specific HCC v28: 29Chronic viral hepatitis C
About ICD-10-CM B18.2
ICD-10-CM code B18.2 represents Chronic viral hepatitis C. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block B18). The 2026 edition of ICD-10-CM B18.2 became effective on October 1, 2025.
Coding Tips for B18.2
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
B18.2 is a CMS-HCC v28 risk-adjustment code (category 29). 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.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under B18.2. Per CMS ICD-10-CM Tabular 2026.
- Carrier of viral hepatitis C
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 B18.2
Local Coverage Determinations (LCDs) from CMS MACs that list B18.2 as a covered diagnosis.
Showing top 10 of 154 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B18.2.
4 Aetna
5 Medicare
CPT Codes Commonly Billed with B18.2
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 0031U CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 0173U CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 0423U CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 81407 CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 0349U CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 81408 CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 0175U CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 0032U CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 81220 CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
- 0392U CMS LCD: Billing and Coding: Pharmacogenomics Testing CMS LCD
Convert B18.2 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 |
|---|---|---|
| B18.2 | 07054 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To B18.2
Other codes in section B15-B19 (Viral hepatitis).
ICD-10 B18.2, Billing FAQ
Is ICD-10 code B18.2 billable? +
Yes, B18.2 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 B18.2? +
ICD-10 B18.2 includes: Carrier of viral hepatitis C.
Does B18.2 affect Medicare Advantage HCC risk adjustment? +
Yes. B18.2 maps to CMS-HCC v28 category 29. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What CPT codes are commonly billed with B18.2? +
Procedures frequently paired with B18.2 include: 0031U, 0173U, 0423U, 81407, 0349U.
What ICD-9 codes does B18.2 map to? +
Per CMS GEMs, B18.2 maps to ICD-9 codes: 07054. 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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