E88.9 Metabolic disorder, unspecified

The ICD-10-CM code for Metabolic disorder, unspecified is E88.9 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

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

Section

E70-E88: Metabolic disorders (E70-E88)

Category E88

30 codes (24 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to E88.9:

• Disorder (of) › metabolism NOS
• Cardiomyopathy (familial) (idiopathic) › metabolic
• Complication (s) (from) (of) › metabolic
• Disturbance (s) › metabolism
• Disease, diseased › metabolic, metabolism
• Cataract (cortical) (immature) (incipient) › in (due to) › metabolic disease
• Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) › in (due to) › metabolic disorder NEC
• Arthropathy › in (due to) › metabolic disease NOS

U.S. Hospital Utilization

• An estimated 1,900 U.S. inpatient stays in 2023 included E88.9 among the documented diagnoses.
• 90 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

Obesity (TOC entry)

b. Obesity .................................................................................................................................. 42

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference E88.9 with the canonical source and edition:

E88.9 — Metabolic disorder, unspecified. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/E88.9

Canonical URL: https://icd10codingpro.com/codes/E88.9