ICD-10 Code E83.30 – Disorder of phosphorus metabolism, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E83.30 – Disorder of phosphorus metabolism, unspecified
What it is
E83.30 identifies a disorder affecting phosphorus metabolism when the documentation does not specify the exact type or cause. Use it for an unspecified phosphorus-related metabolic problem.
Clinical signs
Clinical features vary; refer to documentation. Patients may have findings related to abnormal phosphorus handling, but the record should support a phosphorus metabolism disorder rather than a broader electrolyte issue.
When to use this code
Use E83.30 when the provider documents a disorder of phosphorus metabolism and does not name a more specific condition. It also fits when the chart notes phosphorus metabolism abnormality, but the exact disorder is not clarified. If the documentation later identifies a specific diagnosis, code that condition instead.
Do not use for
Do not use this code for isolated abnormal phosphorus laboratory results without a documented metabolic disorder. Do not use it when a more specific diagnosis, such as a defined genetic or endocrine cause, is recorded.
Coding tip
Query for specificity whenever the note only says “phosphorus abnormality” or “phosphate disorder.”