2026 ICD-10-CM Diagnosis Code K77Liver disorders in diseases classified elsewhere
ICD-10-CM Codes›K00–K95›K70-K77›K77
- Billable — Valid for Submission
- Not Chronic
K77 is a billable ICD-10-CM diagnosis code for liver disorders in diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 441 through 443. The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified liver disease.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for K77.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Alpha-1-antitrypsin hepatitis
- Blastomycosis liver
- Disorder of liver co-occurrent and due to disorder of urea cycle
- Disorder of liver due to disorder of amino acid metabolism
- Disorder of liver due to disorder of mineral metabolism
- Fungal infection of liver
- Glycogen storage disease, hepatic form
- Hepatic amyloidosis
- Histoplasmosis liver
- Infection of liver caused by parasite
- Liver disease co-occurrent and due to mitochondrial disorder
- Liver disease due to peroxisomal disease
- Sickle cell hepatopathy
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
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
- schistosomiasis B65.0 B65.9
Type 1 Excludes
- 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
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Liver Diseases
Your liver is the largest organ inside your body. It helps your body digest food, store energy, and remove poisons.
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Convert K77 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K77Overview
Is K77 (Liver disorders in diseases classified elsewhere) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report liver disorders in diseases classified elsewhere on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K77 group to?
On inpatient claims, liver disorders in diseases classified elsewhere maps to MS-DRG 441, 442, 443, with relative weights from 0.6997 to 1.7947 depending on complications. Higher weights mean higher Medicare reimbursement.
Can K77 be a principal diagnosis?
No. This is a manifestation code: liver disorders in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
What is the ICD-9 equivalent of K77?
Under the General Equivalence Mappings, liver disorders in diseases classified elsewhere converts to ICD-9-CM 573.8 (liver disorders NEC). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
