Skip to content
Dx

ICD-10-CM 2027 diagnosis code

N31.2Flaccid neuropathic bladder, not elsewhere classified

✓ Billable / specific

N31.2 is a valid, billable ICD-10-CM code for flaccid neuropathic bladder, not elsewhere classified. 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 N31.2

N31.2 is the ICD-10-CM diagnosis code for flaccid neuropathic bladder, not elsewhere classified. It belongs to category N31 (neuromuscular dysfunction of bladder, not elsewhere classified), 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 N31 (neuromuscular dysfunction of bladder, not elsewhere classified), N31.2 is specifically for flaccid neuropathic bladder, not elsewhere classified. Related codes cover Uninhibited neuropathic bladder, not elsewhere classified (N31.0), reflex neuropathic bladder, not elsewhere classified (N31.1), other neuromuscular dysfunction of bladder (N31.8) and neuromuscular dysfunction of bladder, unspecified (N31.9).

Use an additional code to identify any associated urinary incontinence (N39.3-N39.4-).

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 698 (Other Kidney and Urinary Tract Diagnoses with MCC, relative weight 1.6398), DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC, relative weight 1.0003), DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC, relative weight 0.6741), 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.

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 596.4 (Atony of bladder) and 596.53 (paralysis of bladder).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Atonic (motor) (sensory) neuropathic bladder
  • Autonomous neuropathic bladder
  • Nonreflex neuropathic bladder

Notes that apply from higher levels

Instructions written at a parent level also apply to N31.2.

› From N31 Neuromuscular dysfunction of bladder, not elsewhere classified
Excludes1
  • cord bladder NOS (G95.89)
  • neurogenic bladder due to cauda equina syndrome (G83.4)
  • neuromuscular dysfunction due to spinal cord lesion (G95.89)
Use additional code
  • code to identify any associated urinary incontinence (N39.3-N39.4-)

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

Alphabetic index entries

18 entries

Terms in the official ICD-10-CM index that lead to N31.2.

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.

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

ICD-9-CM equivalent

Converter →
  • 596.4Atony of bladderapproximate
  • 596.53Paralysis of bladderapproximate

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 N31.2

Is N31.2 billable?

Yes. N31.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can N31.2 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict N31.2 as a principal diagnosis.

Is N31.2 a CC or MCC?

No. N31.2 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does N31.2 group to?

N31.2 is used in the MS-DRG v44.0 logic for MS-DRG 698 (Other Kidney and Urinary Tract Diagnoses with MCC), MS-DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC), MS-DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC), MS-DRG 791 (Prematurity with Major Problems) and MS-DRG 793 (Full Term Neonate with Major Problems). 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 N31.2?

The CMS General Equivalence Mappings map N31.2 to ICD-9-CM 596.4 and 596.53.