ICD-10 Code E72.540 – Dietary hyperoxaluria (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E72.540 – Dietary hyperoxaluria
What it is
Dietary hyperoxaluria means excess oxalate in the body related to food intake. Use this code when documentation identifies hyperoxaluria caused by diet rather than another disorder.
Clinical signs
Clinical features vary; refer to documentation. It may be noted during evaluation for recurrent calcium oxalate kidney stones, elevated urinary oxalate, or a history suggesting oxalate-rich dietary exposure.
When to use this code
Use E72.540 when the provider documents dietary hyperoxaluria as the diagnosis or a confirmed cause of hyperoxaluria. It is appropriate when the record links the condition to diet and not to intestinal disease, genetic causes, or other secondary causes. If the cause is unclear, check documentation.
Do not use for
Do not use this code for hyperoxaluria from malabsorption, bowel disease, or primary inherited oxalosis. Do not assign it when the record only mentions kidney stones without documented dietary hyperoxaluria.
Coding tip
Code only when the documentation clearly names dietary hyperoxaluria; otherwise, query the provider for specificity.