Alcoholic fatty liver is an early stage of alcohol-related liver disease characterized by abnormal accumulation of fat in hepatocytes due to excessive alcohol use. Accurate ICD-10 coding for alcoholic fatty liver is essential because it drives medical necessity, informs treatment pathways, and affects reimbursement and quality reporting. Precise coding also reduces denial risk and supports defensible documentation during audits.
This article explains the ICD-10-CM Code for alcoholic fatty liver, delineates when to use and when not to use the code, lists closely related codes for differential coding decisions, and provides actionable best practices and billing considerations to optimize reimbursement and compliance. Targeted to coders, billers, and RCM professionals, the guidance focuses on documentation elements, scenario-based coding decisions, and payer-aware tips.
The ICD-10-CM Code for Alcoholic fatty liver is K70.0.
Alcoholic fatty liver is a reversible accumulation of triglycerides in the liver caused by sustained ethanol exposure. Clinically, it may present with hepatomegaly, mild elevations in liver enzymes, and imaging findings consistent with steatosis. K70.0 in the ICD-10-CM classification specifically represents alcoholic fatty liver without mention of inflammation or fibrosis; it is used when the documentation clearly attributes hepatic steatosis to alcohol use and does not indicate alcoholic hepatitis, fibrosis, or cirrhosis. Use of this code signals an alcohol-related etiology and should be supported by the clinical record, including history of alcohol consumption and diagnostic testing.
Use K70.0 when a clinician documents hepatic steatosis or fatty change and explicitly attributes it to alcohol use without noting alcohol-induced hepatitis or chronic liver disease. Typical documentation includes imaging reports (ultrasound, CT, MRI) indicating fatty liver plus a history of significant alcohol intake and no evidence of inflammation or cirrhosis.
Apply K70.0 for longitudinal or follow-up outpatient encounters where the problem list includes alcoholic fatty liver and there are no new complications documented. This supports continuity of care and accurate problem-list maintenance when the condition remains fatty change without progression.
When counseling, brief intervention, or monitoring labs for a patient whose primary hepatic diagnosis is alcoholic fatty liver without additional hepatic pathology, code K70.0 to reflect the underlying alcohol etiology driving management decisions, such as alcohol cessation counseling and repeat liver function testing.
If preoperative evaluation documents alcoholic fatty liver on imaging but the patient has normal synthetic liver function and no inflammatory liver disease, K70.0 can be reported to reflect the alcohol-related finding that may influence perioperative risk assessment.
Do not use K70.0 when the clinician documents alcoholic hepatitis or steatohepatitis. Instead, select the code for alcoholic hepatitis (e.g., K70.1 series as applicable) because inflammation and a different level of clinical severity change coding and reimbursement.
Do not use K70.0 for patients documented with alcohol-related cirrhosis or fibrosis. Use the appropriate cirrhosis codes (e.g., K70.3-K70.4 series) that capture chronicity and complications; these codes better reflect resource utilization and medical necessity.
If documentation indicates nonalcoholic fatty liver disease (NAFLD) or metabolic-associated steatotic liver disease, do not use K70.0. Use the NAFLD codes (e.g., K76.0 or K75.81 where applicable) to avoid misattributing etiology and to prevent inappropriate alcohol-related qualifiers.
If imaging shows fatty infiltration but the clinician does not attribute it to alcohol or documents uncertainty regarding cause, avoid K70.0. Instead, use a nonspecific steatosis code until the etiology is clarified in the record to ensure accurate problem-listing and payer expectations.
| Condition | Code | When It Is Used | When It Is Not Used |
|---|---|---|---|
| Alcoholic fatty liver | K70.0 | Use when clinician documents hepatic steatosis attributable to alcohol without evidence of hepatitis, fibrosis, or cirrhosis; supported by history and imaging/labs | Do not use if inflammation, fibrosis, cirrhosis, or a nonalcoholic etiology is documented |
| Alcoholic hepatitis | K70.1 (and subcodes) | Use when acute or chronic inflammatory liver disease due to alcohol is documented with clinical or histologic evidence of hepatitis | Do not use when only fatty change is documented without inflammation or when etiology is nonalcoholic |
| Alcoholic cirrhosis of liver | K70.3 (and subcodes) | Use when cirrhosis is explicitly attributed to alcohol and complications (ascites, varices) are documented | Do not use if only fatty infiltration is present without fibrosis/cirrhosis |
| Nonalcoholic fatty liver disease (NAFLD) | K76.0 or K75.81 (as applicable) | Use when clinician documents fatty liver attributed to metabolic syndrome, obesity, diabetes, or explicitly nonalcoholic steatohepatitis | Do not use when alcohol is identified as the causative factor or documentation supports alcohol-related disease |
Require the medical record to state that the fatty liver is due to alcohol use. Vague terms like "fatty liver" without etiology invite denials or downcoding. Clear attribution supports use of K70.0 and medical necessity for alcohol-focused interventions.
Include imaging reports, liver enzyme trends, and clinician assessment that corroborate alcoholic fatty liver. Objective data strengthen claim defensibility and facilitate accurate medical necessity determinations.
Record documentation of alcohol consumption (type, amount, frequency, duration) and counseling provided. Payers review etiology when alcohol-related codes are billed; quantifiable history reduces ambiguity and audit risk.
When submitting claims for lab tests, imaging, counseling, or procedures, explicitly connect those services to the alcoholic fatty liver diagnosis in the visit note. This supports medical necessity and reduces denials for unrelated services.
Leverage CombineHealth.ai's AI-powered platform and CombineHealth.ai's intelligent platform for automated claim scrubbing and coding validation. Pre-submission validation flags mismatches between documentation and selected codes, improving first-pass acceptance rates and reducing denial volume.
Coding for alcoholic fatty liver has direct impact on revenue cycle outcomes:
Accurate ICD-10 coding is critical for healthcare revenue cycle performance. CombineHealth.ai's AI-powered platform helps RCM teams ensure coding accuracy, reduce denials, and optimize reimbursement through intelligent denial management and claim validation. CombineHealth.ai's intelligent platform provides automated claim scrubbing and coding validation to catch errors before submission, reducing denials and improving first-pass acceptance rates.
Q1: What is the ICD-10 code for alcoholic fatty liver?
The ICD-10-CM code for alcoholic fatty liver is K70.0. This code is used when hepatic steatosis is explicitly attributed to alcohol use and there is no documentation of alcoholic hepatitis, fibrosis, or cirrhosis. Supporting documentation should include clinical assessment, alcohol use history, and diagnostic testing such as imaging or liver enzymes.
Q2: When should I use K70.0 vs related codes?
Use K70.0 when the clinician documents fatty liver attributable to alcohol without inflammatory or chronic structural changes. If the record documents alcoholic hepatitis, use the alcoholic hepatitis codes; if cirrhosis is present, use the alcohol-related cirrhosis codes. If etiology is nonalcoholic, use NAFLD-related codes.
Q3: What documentation is required when coding for alcoholic fatty liver?
Documentation should include explicit attribution to alcohol, relevant alcohol use history (amount and duration), objective findings (imaging, labs), clinician assessment linking symptoms or management to the condition, and any counseling or treatment interventions provided. Link procedures and tests to the diagnosis in the encounter note.
Q4: What are common denial reasons when coding for alcoholic fatty liver?
Common denials arise from unsupported etiology, mismatched documentation (e.g., documentation of hepatitis or cirrhosis elsewhere), lack of objective findings, and failure to link billed services to the diagnosis. For strategies to reduce denials, see our guide on denial management.