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v1.0.0
ICD-10 Guide
DiagnosesAcute Liver Injury

Acute Liver Injury

ICD-10 Coding for Acute Liver Injury(K76.9, K71.6)

PRIMARY SPECIALTYHepatology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Acute Liver Injury?
Essential facts and insights about Acute Liver Injury

Key Clinical Considerations:

  • Patients may present with jaundice, fatigue, nausea, vomiting, and abdominal pain.
  • Laboratory findings typically include elevated liver enzymes (AST, ALT), bilirubin levels, and alkaline phosphatase.
  • Physical examination may reveal hepatomegaly, tenderness in the right upper quadrant, and signs of liver failure.
  • Imaging studies such as ultrasound may show liver enlargement or signs of hepatic steatosis.
  • Severity criteria include the degree of liver enzyme elevation and the presence of hepatic encephalopathy or coagulopathy.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Medical records must document the patient's symptoms, laboratory results, and any imaging findings.
  • Specific terminology such as 'acute liver injury' or 'acute liver failure' must be used accurately.
  • Examples include documenting the specific liver enzyme levels and any associated symptoms.
  • Medical necessity must be established through documentation of the clinical rationale for testing and treatment.
  • Quality measures may require documentation of follow-up care and monitoring of liver function.

Coding Guidelines

Usage Guidelines & Examples

  • Use K76.9 for unspecified acute liver injury when the cause is not determined; use K71.6 for drug-induced liver injury.
  • Do not use these codes for chronic liver diseases or conditions like cirrhosis.
  • K76.0 (Fatty liver) and K70.0 (Alcoholic liver disease) are related but represent different conditions.
  • Common errors include misclassifying chronic liver conditions as acute; ensure the timeline of symptoms is clear.
  • In complex cases, consider the underlying cause of liver injury to select the most appropriate code.

Code Exclusions

Important Exclusions

  • Excludes chronic liver diseases such as cirrhosis (K74) and chronic hepatitis (K73).
  • Alternative codes for excluded conditions include K70 for alcoholic liver disease and K73 for chronic hepatitis.
  • Conditions are excluded because they represent different disease processes with distinct management.
  • Common mistakes include misclassifying chronic conditions as acute; ensure clear documentation of the timeline.
  • Related but distinct conditions include autoimmune hepatitis and metabolic liver diseases.

Related ICD-10 Codes

Primary Codes
K76.9
Acute liver injury, unspecified
K71.6
Toxic liver disease due to drugs
Ancillary Codes
R94.5
T36-T50
Differential Codes
K72.0
K70.1

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Hepatology

Specialty Applications

  • Applies to patients with acute liver injury from various causes, including viral infections, toxins, and medications.
  • Patient populations include adults and children, with risk factors such as alcohol use, obesity, and certain medications.
  • Clinical settings include inpatient hospitalizations, outpatient clinics, and emergency departments.
  • Specialty-specific applications are relevant in hepatology and gastroenterology.
  • Treatment contexts include acute management of liver failure and monitoring for complications.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Template: 'Patient diagnosed with acute liver injury based on elevated liver enzymes and jaundice.'

Template 2

Template: 'Clinical presentation consistent with acute liver injury including nausea and abdominal pain.'

Template 3

Template: 'Diagnostic criteria met as evidenced by AST and ALT levels significantly above normal.'

Template 4

Template: 'Treatment plan initiated for acute liver injury with supportive care and monitoring.'

Template 5

Template: 'Follow-up care for acute liver injury including regular liver function tests and symptom monitoring.'

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What documentation is required for this diagnosis?

Documentation must include clinical findings, lab results, and imaging studies.

How does this differ from similar diagnoses?

Acute liver injury is characterized by a rapid onset of symptoms and elevated liver enzymes, unlike chronic conditions.

What are common billing considerations?

Ensure that the diagnosis is supported by medical necessity and that all relevant tests are documented.

What procedures are typically associated?

CPT codes for liver function tests, imaging studies, and potential liver biopsies may be relevant.

Are there any quality reporting implications?

Quality measures may include monitoring liver function and follow-up care documentation.