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ICD-10-CM 2027 diagnosis code

N32.3Diverticulum of bladder

✓ Billable / specific

N32.3 is a valid, billable ICD-10-CM code for diverticulum of bladder. 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 N32.3

N32.3 is the ICD-10-CM diagnosis code for diverticulum of bladder. It belongs to category N32 (other disorders of bladder), 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 N32 (other disorders of bladder), N32.3 is specifically for diverticulum of bladder. Related codes cover Bladder-neck obstruction (N32.0), Vesicointestinal fistula (N32.1), Vesical fistula, not elsewhere classified (N32.2), other specified disorders of bladder (N32.8) and bladder disorder, unspecified (N32.9).

Don't report N32.3 together with the conditions in its Excludes1 note: congenital diverticulum of bladder (Q64.6) and diverticulitis of bladder (N30.8-).

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 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) and DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC, relative weight 0.6741), 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 596.3 (diverticulum of bladder).

Coding notes

Excludes1Not coded here — never report together with this code
  • congenital diverticulum of bladder (Q64.6)
  • diverticulitis of bladder (N30.8-)

Notes that apply from higher levels

Instructions written at a parent level also apply to N32.3.

› From N32 Other disorders of bladder
Excludes2
  • calculus of bladder (N21.0)
  • cystocele (N81.1-)
  • hernia or prolapse of bladder, female (N81.1-)

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

Alphabetic index entries

5 entries

Terms in the official ICD-10-CM index that lead to N32.3.

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 →
  • 596.3Diverticulum of bladderexact

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 N32.3

Is N32.3 billable?

Yes. N32.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can N32.3 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict N32.3 as a principal diagnosis.

Is N32.3 a CC or MCC?

No. N32.3 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does N32.3 group to?

N32.3 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) and MS-DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/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 N32.3?

The CMS General Equivalence Mappings map N32.3 to ICD-9-CM 596.3.