ICD-10-CM 2027
ICD-10 code for Hypercalcemic nephropathy
From the official ICD-10-CM alphabetic index entry “Nephropathy › hypercalcemic”. Page updated September 29, 2026.
About coding Hypercalcemic nephropathy
The ICD-10-CM code for Hypercalcemic nephropathy is N25.89 (Other disorders resulting from impaired renal tubular function).
Within N25.8, choose N25.89 (Other disorders resulting from impaired renal tubular function) only when documentation doesn't support a more specific option: secondary hyperparathyroidism of renal origin (N25.81).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 698 (Other Kidney and Urinary Tract Diagnoses with MCC, relative weight 1.6398), DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC, relative weight 1.0003) and DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC, relative weight 0.6741), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Hypercalcemic nephropathy ICD-10 codes
What is the ICD-10 code for Hypercalcemic nephropathy?
- N25.89 — Other disorders resulting from impaired renal tubular function.
Is N25.89 billable?
- Yes. N25.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N25.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N25.89 as a principal diagnosis.
Is N25.89 a CC or MCC?
- No. N25.89 is neither a CC nor an MCC under MS-DRG v44.0.