E23.2Diabetes insipidus

E23.2 is the ICD-10-CM diagnosis code for diabetes insipidus. It belongs to category E23 (hypofunction and other disorders of the pituitary gland), block E20-E35 (disorders of other endocrine glands) and chapter 4 (endocrine, nutritional and metabolic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within E23 (hypofunction and other disorders of the pituitary gland), E23.2 is specifically for diabetes insipidus. Related codes cover hypopituitarism (E23.0), drug-induced hypopituitarism (E23.1), hypothalamic dysfunction, not elsewhere classified (E23.3), other disorders of pituitary gland (E23.6) and disorder of pituitary gland, unspecified (E23.7).

Don't report E23.2 together with the conditions in its Excludes1 note: nephrogenic diabetes insipidus (N25.1).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 643 (Endocrine Disorders with MCC, relative weight 1.6139), DRG 644 (Endocrine Disorders with CC, relative weight 1.0044), DRG 645 (Endocrine Disorders without CC/MCC, relative weight 0.7459), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 253.5 (diabetes insipidus).