What does ICD-10 code E71.31 mean?

ICD-10 code E71.31 is the standardized code used for disorders of fatty-acid oxidation in medical records and coding systems.

When is ICD-10 code E71.31 used?

Doctors, hospitals, and insurers may use ICD-10 code E71.31 when recording disorders of fatty-acid oxidation in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code E71.31 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code E71.31: Disorders of fatty-acid oxidation

Name: ICD-10 Code E71.31: Disorders of fatty-acid oxidation
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:05:21.310Z

E71.31 is an ICD-10 diagnosis entry used to group records related to Disorders of fatty-acid oxidation. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).

When is it used?

May be used when a clinician documents disorders of fatty-acid oxidation in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

4Endocrine, nutritional and metabolic diseases (E00-E89)

block

E70-E88Metabolic disorders

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

EndocrinologistGeneral Physician

Sibling codes

E71.30Disorder of fatty-acid metabolism, unspecifiedbillable E71.32Disorders of ketone metabolismbillable E71.39Other disorders of fatty-acid metabolismbillable

Coding guidelines

Common synonyms

Disorders of fatty-acid oxidation

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.