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ICD10BillableValid for clinical use

ICD-10 Code N32.81: Overactive bladder

N32.81 is a billable ICD-10 diagnosis code used to classify Overactive bladder in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the genitourinary system (N00-N99).

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the genitourinary system (N00-N99).

When is it used?

  • May be used when a clinician documents overactive bladder in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
14Diseases of the genitourinary system (N00-N99)
block
N30-N39Other diseases of the urinary system
category
N32Other disorders of bladder
category
N32.8Other specified disorders of bladder
currentN32.8

Official coding notes

Inclusion terms
  • Detrusor muscle hyperactivity
Excludes1 (do not code together)
  • frequent urination due to specified bladder condition- code to condition

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

UrologistGynecologist

Coverage-related procedures and services

CPT 51726high
COMPLEX CYSTOMETROGRAM (IE, CALIBRATED ELECTRONIC EQUIPMENT);
Source: CMS coverage guidance
CPT 51727high
COMPLEX CYSTOMETROGRAM (IE, CALIBRATED ELECTRONIC EQUIPMENT); WITH URETHRAL PRESSURE PROFILE STUDIES (IE, URETHRAL CLOSURE PRESSURE PROFILE), ANY TECHNIQUE
Source: CMS coverage guidance
CPT 51729high
COMPLEX CYSTOMETROGRAM (IE, CALIBRATED ELECTRONIC EQUIPMENT); WITH VOIDING PRESSURE STUDIES (IE, BLADDER VOIDING PRESSURE) AND URETHRAL PRESSURE PROFILE STUDIES (IE, URETHRAL CLOSURE PRESSURE PROFILE), ANY TECHNIQUE
Source: CMS coverage guidance
CPT 51728high
COMPLEX CYSTOMETROGRAM (IE, CALIBRATED ELECTRONIC EQUIPMENT); WITH VOIDING PRESSURE STUDIES (IE, BLADDER VOIDING PRESSURE), ANY TECHNIQUE
Source: CMS coverage guidance
CPT 51741high
COMPLEX UROFLOWMETRY (EG, CALIBRATED ELECTRONIC EQUIPMENT)
Source: CMS coverage guidance
HCPCS J0585high
INJECTION, ONABOTULINUMTOXINA, 1 UNIT
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Overactive bladder

Frequently asked questions

Code details

CodeN32.81
SystemICD10
Display nameOveractive bladder
ChapterDiseases of the genitourinary system (N00-N99)
BlockOther diseases of the urinary system

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Hyperactive, hyperactivityOveractive

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.