Is ICD-10-CM code R33 billable?

No, R33 (Retention of urine) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code R33 belong to?

R33 belongs to Chapter 18 of the ICD-10-CM tabular list: R00–R99 (Symptoms, Signs and Abnormal Clinical and Laboratory Findings).

R33Non-billable

Retention of urine

Symptoms, Signs and Abnormal Clinical and Laboratory Findings·Symptoms and signs involving the genitourinary system (R30-R39)·category·FY 2026

Use a more specific code (3 billable)

R33.0Drug induced retention of urine R33.8Other retention of urine R33.9Retention of urine, unspecified

CH18 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

abnormal findings on antenatal screening of mother (O28.-)
certain conditions originating in the perinatal period (P04-P96)
signs and symptoms classified in the body system chapters
signs and symptoms of breast (N63, N64.5)

Instructional Notes

Excludes1(Not coded here. Use a different code.)

psychogenic retention of urine (F45.8)

Clinical Hierarchy

BillableHas subcodes

CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

R30-R39Symptoms and signs involving the genitourinary system (R30-R39)

R33Retention of urineNot billable

R33.0Drug induced retention of urineBillable

R33.8Other retention of urineBillable

R33.9Retention of urine, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.