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ICD-10-CM 2027 diagnosis code

N39.490Overflow incontinence

✓ Billable / specific

N39.490 is a valid, billable ICD-10-CM code for overflow incontinence. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About N39.490

N39.490 is the ICD-10-CM diagnosis code for Overflow incontinence. It belongs to category N39 (other disorders of urinary system), block N30-N39 (other diseases of the urinary system) and chapter 14 (diseases of the genitourinary system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within N39.49 (other specified urinary incontinence), N39.490 is specifically for Overflow incontinence. Related codes cover Coital incontinence (N39.491), postural (urinary) incontinence (N39.492) and other specified urinary incontinence (N39.498).

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) and DRG 696 (Kidney and Urinary Tract Signs and Symptoms without MCC, relative weight 0.6679), 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 788.38 (Overflow incontinence).

Notes that apply from higher levels

Instructions written at a parent level also apply to N39.490.

› From N39.4 Other specified urinary incontinence
Excludes1
  • enuresis NOS (R32)
  • functional urinary incontinence (R39.81)
  • urinary incontinence associated with cognitive impairment (R39.81)
  • urinary incontinence NOS (R32)
  • urinary incontinence of nonorganic origin (F98.0)
Code also
  • any associated overactive bladder (N32.81)
› From N39 Other disorders of urinary system
Excludes2
  • hematuria NOS (R31.-)
  • recurrent or persistent hematuria (N02.-)
  • recurrent or persistent hematuria with specified morphological lesion (N02.-)
  • proteinuria NOS (R80.-)

Broader instructions also apply from N30-N39 Other diseases of the urinary system and Chapter 14: Diseases of the genitourinary system.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to N39.490.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 788.38Overflow incontinenceexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about N39.490

Is N39.490 billable?

Yes. N39.490 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can N39.490 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict N39.490 as a principal diagnosis.

Is N39.490 a CC or MCC?

No. N39.490 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does N39.490 group to?

N39.490 is used in the MS-DRG v44.0 logic for MS-DRG 695 (Kidney and Urinary Tract Signs and Symptoms with MCC) and MS-DRG 696 (Kidney and Urinary Tract Signs and Symptoms without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for N39.490?

The CMS General Equivalence Mappings map N39.490 to ICD-9-CM 788.38.