ICD-10 K77
Billable / Specific CCLiver disorders in diseases classified elsewhere
About ICD-10-CM K77
ICD-10-CM code K77 represents Liver disorders in diseases classified elsewhere. This is a billable/specific code in the Digestive System chapter (block K77). The 2026 edition of ICD-10-CM K77 became effective on October 1, 2025.
Coding Tips for K77
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
K77 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.
Type 1 Excludes
Pure excludes, these codes can never be coded together with K77. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- alcoholic hepatitis (K70.1-)
- alcoholic liver disease (K70.-)
- cytomegaloviral hepatitis (B25.1)
- herpesviral [herpes simplex] hepatitis (B00.81)
- mumps hepatitis (B26.81)
- sarcoidosis with liver disease (D86.89)
- secondary syphilis with liver disease (A51.45)
- syphilis (late) with liver disease (A52.74)
- toxoplasmosis (acquired) hepatitis (B58.1)
- tuberculosis with liver disease (A18.83)
Coding Notes
Code First
- underlying disease, such as:
- amyloidosis (E85.-)
- congenital syphilis (A50.0, A50.5)
- congenital toxoplasmosis (P37.1)
- infectious mononucleosis with liver disease (B27.0-B27.9 with fifth character 9)
- schistosomiasis (B65.0-B65.9)
Inpatient DRG Impact, CC
Excl Liver disorders in diseases classified elsewhere. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for K77
Local Coverage Determinations (LCDs) from CMS MACs that list K77 as a covered diagnosis.
Showing top 9. Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing K77.
1 Cigna
1 Medicare
CPT Codes Commonly Billed with K77
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert K77 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 |
|---|---|---|
| K77 | 5738 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To K77
Other codes in section K70-K77 (Diseases of liver).
ICD-10 K77, Billing FAQ
Is ICD-10 code K77 billable? +
Yes, K77 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for K77? +
Type 1 Excludes (never code together with K77): alcoholic hepatitis (K70.1-); alcoholic liver disease (K70.-); cytomegaloviral hepatitis (B25.1)
Is K77 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 ICD-9 codes does K77 map to? +
Per CMS GEMs, K77 maps to ICD-9 codes: 5738. 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 18, 2026.
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