2027 ICD-10-CM Diagnosis Code N33Bladder disorders in diseases classified elsewhere
ICD-10-CM Codes›N00–N99›N30-N39›N33
- Billable — Valid for Submission
- Not Chronic
N33 is a billable ICD-10-CM diagnosis code for bladder disorders in diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 698 through 700. The code is a manifestation code that cannot be reported as the principal diagnosis. Coders also document this condition as disorder of urinary bladder caused by Schistosoma. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified diseases of bladder and urethra.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for N33.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Disorder of urinary bladder caused by Schistosoma
- Disorder of urinary bladder caused by Schistosoma japonicum
- Schistosoma japonicum infection
- Urinary schistosomiasis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N33: its own notes plus those printed at block N30-N39 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Code First
The underlying condition named in the note is sequenced before this code.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Bladder Diseases
The bladder is a hollow organ in your lower abdomen that stores urine. Many conditions can affect your bladder. Some common ones are:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert N33 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N33Overview
What is the ICD-10 code for bladder disorders in diseases classified elsewhere?
The ICD-10-CM code for bladder disorders in diseases classified elsewhere is N33. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is N33 (Bladder disorders in diseases classified elsewhere) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report bladder disorders in diseases classified elsewhere on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does N33 group to?
On inpatient claims, bladder disorders in diseases classified elsewhere maps to MS-DRG 699, 698, 700, with relative weights from 0.6740 to 1.6400 depending on complications. Higher weights mean higher Medicare reimbursement.
Can N33 be a principal diagnosis?
No. This is a manifestation code: bladder disorders in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
Can N33 be reported with A52.76?
Not as a rule. The Excludes1 note on N33 lists "bladder disorder in syphilis (A52.76)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
