ICD-10 code for urinary retention

The ICD-10-CM code for urinary retention is R33.9 (Retention of urine, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R33.9.

Within R33, choose R33.9 (unspecified) only when documentation doesn't support a more specific option: drug induced retention of urine (R33.0) and other retention of urine (R33.8).

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 695 (Kidney and Urinary Tract Signs and Symptoms with MCC, relative weight 1.1139), DRG 696 (Kidney and Urinary Tract Signs and Symptoms without MCC, relative weight 0.6679), 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 11 (Diseases and Disorders of the Kidney and Urinary Tract) 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.