R34Anuria and oliguria

R34 is the ICD-10-CM diagnosis code for anuria and oliguria. It belongs to block R30-R39 (symptoms and signs involving the genitourinary system) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Don't report R34 together with the conditions in its Excludes1 note: anuria and oliguria complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4), anuria and oliguria complicating pregnancy (O26.83-) and anuria and oliguria complicating the puerperium (O90.49).

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 673 (Other Kidney and Urinary Tract Procedures with MCC, relative weight 4.2525), DRG 674 (Other Kidney and Urinary Tract Procedures with CC, relative weight 2.2504), DRG 675 (Other Kidney and Urinary Tract Procedures without CC/MCC, relative weight 1.5887), DRG 682 (Renal Failure with MCC, relative weight 1.4656), DRG 683 (Renal Failure with CC, relative weight 0.8647) and DRG 684 (Renal Failure without CC/MCC, relative weight 0.6003), 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.

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 788.5 (oliguria and anuria).