K76

Other diseases of liver

The ICD-10-CM category K76 represents a group of liver conditions that are not classified under more specific categories such as alcoholic liver disease (K70), toxic liver disease (K71), or cirrhosis (K74). This category is clinically significant as it includes common and complex metabolic, vascular, and idiopathic conditions. Key among these are nonalcoholic fatty liver disease (now often referred to as metabolic dysfunction-associated steatotic liver disease or MASLD), portal hypertension, and various vascular disturbances like hepatic infarction or veno-occlusive disease. These conditions range from asymptomatic structural changes to life-threatening complications like hepatorenal syndrome or hepatic encephalopathy. This category acts as a catchment for liver pathologies that involve metabolic accumulation, vascular congestion, or specialized syndromes where the liver is the primary site of injury but the mechanism is not inflammatory, infectious, or toxic in the traditional sense.

Clinical Symptoms

  • Hepatomegaly (enlarged liver)
  • Right upper quadrant abdominal pain or discomfort
  • Ascites (accumulation of fluid in the peritoneal cavity)
  • Splenomegaly secondary to portal hypertension
  • Jaundice (yellowing of the skin and eyes)
  • Fatigue and malaise
  • Pruritus (generalized itching)
  • Palmar erythema
  • Spider angiomata
  • Peripheral edema
  • Caput medusae
  • Mental confusion or altered consciousness (in hepatic encephalopathy)
  • Nausea and anorexia
  • Hematemesis (in cases of ruptured esophageal varices due to portal hypertension)

Common Causes

  • Metabolic syndrome and insulin resistance (Nonalcoholic fatty liver disease)
  • Congestive heart failure leading to hepatic congestion (cardiac cirrhosis)
  • Hepatic artery thrombosis or embolism (Liver infarction)
  • Hepatic vein obstruction (Budd-Chiari syndrome or veno-occlusive disease)
  • Drug-induced vascular injury
  • Chronic venous hypertension
  • Systemic hypotension or shock (leading to central hemorrhagic necrosis)
  • Bacterial, fungal, or parasitic infections (Peliosis hepatis)
  • Genetic predispositions to metabolic dysfunction
  • Advanced renal failure complicating liver disease (Hepatorenal syndrome)

Documentation & Coding Tips

Distinguish between Non-alcoholic Fatty Liver Disease (NAFLD) and Non-alcoholic Steatohepatitis (NASH).

Example: Assessment: 54-year-old male with BMI 34, Type 2 DM, and persistently elevated ALT/AST. Liver biopsy confirms Non-alcoholic steatohepatitis (NASH) with Stage 2 fibrosis. Plan: Start Vitamin E 800 IU daily and intensify weight loss counseling. Billing Focus: Code K76.81 for NASH rather than the less specific K76.0. Risk Adjustment: NASH is a more severe metabolic condition often captured in risk-adjusted models due to its progression to cirrhosis.

Billing Focus: Specificity of diagnosis (NASH vs. NAFLD).

Document the underlying cause of chronic passive congestion of the liver, such as right-sided heart failure.

Example: Subjective: Patient reports worsening abdominal girth and RUQ heaviness. Objective: Physical exam shows JVD and 3+ pedal edema. Imaging reveals hepatomegaly with dilated hepatic veins. Assessment: Chronic passive congestion of the liver secondary to Acute on Chronic Systolic Heart Failure (NYHA Class III). Plan: Increase Furosemide to 40mg BID. Billing Focus: Linkage of the liver condition to the cardiac etiology. Risk Adjustment: Passive congestion often correlates with high-risk HCC (Hierarchical Condition Categories) for heart failure.

Billing Focus: Etiological linkage and chronicity.

Clearly specify the type and trigger of hepatorenal syndrome to ensure correct code selection.

Example: Assessment: 62-year-old female with known alcoholic cirrhosis presenting with acute kidney injury. Cr increased from 1.1 to 2.4 in 48 hours without response to 2 days of albumin challenge. Diagnosed with Hepatorenal syndrome, Type 1. Plan: Initiate Midodrine and Octreotide; evaluate for transplant. Billing Focus: Differentiation between Type 1 (Acute) and Type 2 (Chronic) manifestations. Risk Adjustment: Critical; Hepatorenal syndrome (K76.7) is a high-weight HCC category.

Billing Focus: Type 1 versus Type 2 specificity.

Document clinical manifestations of portal hypertension, such as esophageal varices or splenomegaly.

Example: Objective: EGD demonstrates Grade II esophageal varices without active bleeding. Ultrasound shows a portal vein diameter of 15mm and splenomegaly. Assessment: Portal hypertension related to non-cirrhotic portal vein thrombosis. Plan: Continue Propranolol for primary prophylaxis. Billing Focus: Identification of associated manifestations (varices) that require additional codes. Risk Adjustment: Portal hypertension is a primary indicator of advanced liver disease severity.

Billing Focus: Associated manifestations and underlying vascular cause.

Detail the extent and acuity of liver infarction or central hemorrhagic necrosis.

Example: Assessment: Patient status post hypotensive crisis following massive MI. AST/ALT acutely elevated to >3000 U/L. CT abdomen shows wedge-shaped hypodense areas consistent with Acute infarction of the liver. Plan: Supportive care, monitor INR and ammonia levels. Billing Focus: Acuity (acute) and anatomical findings (infarction). Risk Adjustment: Acute liver failure or infarction represents critical severity in inpatient settings.

Billing Focus: Acuity and radiological confirmation.

Relevant CPT Codes

Related Diagnoses

Hierarchy