ICD-10 Code E83.59 – Other disorders of calcium metabolism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E83.59 – Other disorders of calcium metabolism
What it is
E83.59 identifies disorders of calcium metabolism not classified elsewhere. Use it when the record documents an abnormal calcium handling problem, but a more specific calcium-related diagnosis is not named.
Clinical signs
Clinical features vary; refer to documentation. Findings may include symptoms or laboratory evidence of abnormal calcium balance, but you should code only what the provider clearly states.
When to use this code
Use E83.59 when the clinician documents a nonspecific calcium metabolism disorder and no other ICD-10-CM code fits better. It is appropriate when the chart does not identify a distinct condition such as a specific endocrine or bone disorder. Check documentation if the cause, type, or associated disease is named.
Do not use for
Do not use this code when the record supports a more specific diagnosis, such as a defined parathyroid, vitamin D, or malignant hypercalcemia-related condition. If the chart names another disorder, code that condition instead.
Coding tip
Look for the underlying cause first; if it is documented, code the more specific diagnosis rather than E83.59.