2026 ICD-10-CM Diagnosis Code E79.82Hereditary xanthinuria

ICD-10-CM Codes›E00–E89›E70-E88›E79

ICD-10-CM E79.82
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E79.82 is a billable ICD-10-CM diagnosis code for hereditary xanthinuria. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified nutritional and metabolic disorders.

Code Identity

ICD-10-CM Code
E79.82
Billable Status
Yes — Valid for Submission
Code Describes
Hereditary xanthinuria
Short Description
Hereditary xanthinuria
Same as the full description in the CMS dataset.
Parent Code
E79.8
Other disorders of purine and pyrimidine metabolism

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE70-E88Metabolic disorders
CategoryE79Disorders of purine and pyrimidine metabolism
This CodeE79.82Hereditary xanthinuria

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Combined molybdoflavoprotein enzyme deficiency
  • Deficiency of xanthine oxidase
  • Hereditary xanthinuria
  • Hereditary xanthinuria type 1
  • Molybdenum cofactor deficiency complementation group A
  • Molybdenum cofactor deficiency complementation group B
  • Molybdenum cofactor deficiency complementation group C
  • Xanthinuria

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Calculus, calculi, calculous
      • xanthine
    • Stone(s)
      • xanthine
    • Xanthinuria, hereditary

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR END016
Other specified and unspecified nutritional and metabolic disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement E79.82 replaces the following previously assigned code(s):

  • E79.8 - Other disorders of purine and pyrimidine metabolism
FY 2024AddedAdded to the ICD-10-CM code setEffective October 1, 2023.
FY 2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E79.82Overview

Is E79.82 (Other disorders of purine and pyrimidine metabolism) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hereditary xanthinuria on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.