R74.01 — Elevation of levels of liver transaminase levels

R74.01

ICD-10 Chapter 18: Symptoms, Signs & Abnormal Findings — illustrative image — Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99) — illustrative image

What this code means

Raised liver transaminase levels (ALT/AST) on blood tests, an abnormal finding that prompts a search for liver causes.

Also called: elevated transaminases, raised lfts, elevated liver enzymes.

When this code is used

Used for elevation of levels of liver transaminase levels.

Where it sits in ICD-10-CM

Code R74.01 belongs to Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, which covers codes R00–R99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Frequently asked questions

What is ICD-10-CM code R74.01?

R74.01 is the ICD-10-CM diagnosis code for “Elevation of levels of liver transaminase levels”. Raised liver transaminase levels (ALT/AST) on blood tests, an abnormal finding that prompts a search for liver causes.

When is code R74.01 used?

Used for elevation of levels of liver transaminase levels. It belongs to Chapter 18 of ICD-10-CM (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.