ICD-10 Code D86.84 – Sarcoid pyelonephritis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D86.84 – Sarcoid pyelonephritis
What it is
D86.84 identifies sarcoid pyelonephritis, meaning kidney inflammation associated with sarcoidosis. Use it when the chart documents sarcoid involvement of the kidney rather than a nonspecific renal disorder.
Clinical signs
Clinical features vary; refer to documentation. Records may note renal involvement with sarcoidosis, such as kidney inflammation, impaired renal function, or findings attributed to granulomatous disease.
When to use this code
Use this code when the provider specifically documents sarcoid pyelonephritis or renal sarcoidosis affecting the kidney. It may also apply when the note clearly links pyelonephritis-like renal inflammation to sarcoidosis. Check documentation if the renal diagnosis is not explicitly tied to sarcoid disease.
Do not use for
Do not use D86.84 for ordinary infectious pyelonephritis, nephritis without sarcoid involvement, or unspecified kidney disease. If the record does not clearly connect the renal condition to sarcoidosis, code the documented diagnosis instead.
Coding tip
Look for explicit provider wording that the kidney condition is sarcoid-related before assigning D86.84.