ICD-10 B16.9
Billable / Specific CCAcute hepatitis B without delta-agent and without hepatic coma
About ICD-10-CM B16.9
ICD-10-CM code B16.9 represents Acute hepatitis B without delta-agent and without hepatic coma. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block B16). The 2026 edition of ICD-10-CM B16.9 became effective on October 1, 2025.
Coding Tips for B16.9
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
B16.9 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under B16.9. Per CMS ICD-10-CM Tabular 2026.
- Hepatitis B (acute) (viral) NOS
Inpatient DRG Impact, CC
codes Acute hepatitis B without delta-agent and without hepatic coma. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for B16.9
Local Coverage Determinations (LCDs) from CMS MACs that list B16.9 as a covered diagnosis.
Showing top 10 of 36 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B16.9.
2 Aetna
2 Medicare
CPT Codes Commonly Billed with B16.9
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- J0840 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J0850 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- 90371 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- 90375 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1573 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1569 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1459 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1557 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1556 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1560 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
Convert B16.9 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 |
|---|---|---|
| B16.9 | 07030 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To B16.9
Other codes in section B15-B19 (Viral hepatitis).
ICD-10 B16.9, Billing FAQ
Is ICD-10 code B16.9 billable? +
Yes, B16.9 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 B16.9? +
ICD-10 B16.9 includes: Hepatitis B (acute) (viral) NOS.
Is B16.9 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with B16.9? +
Procedures frequently paired with B16.9 include: J0840, J0850, 90371, 90375, J1573.
What ICD-9 codes does B16.9 map to? +
Per CMS GEMs, B16.9 maps to ICD-9 codes: 07030. 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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