ICD-10-CM Codes
N00-N99 Diseases of the genitourinary system
N30-N39 Other diseases of the urinary system
N33- Bladder disorders in diseases classified elsewhere
2021 ICD-10-CM Diagnosis Code N33

2021 ICD-10-CM Diagnosis Code N33

Bladder disorders in diseases classified elsewhere

2016

2017

2018

2019

2020

2021

Billable/Specific Code

Manifestation Code

N33 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2021 edition of ICD-10-CM N33 became effective on October 1, 2020.
This is the American ICD-10-CM version of N33 - other international versions of ICD-10 N33 may differ.

ICD-10-CM Coding Rules

N33 describes the manifestation of an underlying disease, not the disease itself.

Code First

Code First Help

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.

underlying disease, such as:
schistosomiasis (
ICD-10-CM Diagnosis Code B65.0
Schistosomiasis due to Schistosoma haematobium [urinary schistosomiasis]
B65.0-
ICD-10-CM Diagnosis Code B65.9
Schistosomiasis, unspecified
B65.9
)

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as N33. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

bladder disorder in syphilis (
ICD-10-CM Diagnosis Code A52.76
Other genitourinary symptomatic late syphilis
Applicable To
- Late syphilitic female pelvic inflammatory disease
A52.76
)
bladder disorder in tuberculosis (
ICD-10-CM Diagnosis Code A18.12
Tuberculosis of bladder
A18.12
)
candidal cystitis (
ICD-10-CM Diagnosis Code B37.41
Candidal cystitis and urethritis
B37.41
)
chlamydial cystitis (
ICD-10-CM Diagnosis Code A56.01
Chlamydial cystitis and urethritis
A56.01
)
cystitis in gonorrhea (
ICD-10-CM Diagnosis Code A54.01
Gonococcal cystitis and urethritis, unspecified
A54.01
)
cystitis in neurogenic bladder (
ICD-10-CM Diagnosis Code N31
- N31 Neuromuscular dysfunction of bladder, not els...
  - N31.0 Uninhibited neuropathic bladder, not elsewher...
  - N31.1 Reflex neuropathic bladder, not elsewhere cla...
  - N31.2 Flaccid neuropathic bladder, not elsewhere cl...
  - N31.8 Other neuromuscular dysfunction of bladder
  - N31.9 Neuromuscular dysfunction of bladder, unspeci...
N31.-
)
diphtheritic cystitis (
ICD-10-CM Diagnosis Code A36.85
Diphtheritic cystitis
A36.85
)
syphilitic cystitis (
ICD-10-CM Diagnosis Code A52.76
Other genitourinary symptomatic late syphilis
Applicable To
- Late syphilitic female pelvic inflammatory disease
A52.76
)
trichomonal cystitis (
ICD-10-CM Diagnosis Code A59.03
Trichomonal cystitis and urethritis
A59.03
)

The following code(s) above N33 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to N33:

N00-N99
2021 ICD-10-CM Range N00-N99
Diseases of the genitourinary system
Type 2 Excludes
- 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)
Diseases of the genitourinary system
N30-N39
2021 ICD-10-CM Range N30-N39
Other diseases of the urinary system
Type 1 Excludes
- urinary infection (complicating):
- abortion or ectopic or molar pregnancy (O00-O07, O08.8)
- pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)
Other diseases of the urinary system

ICD-10-CM N33 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):

698 Other kidney and urinary tract diagnoses with mcc
699 Other kidney and urinary tract diagnoses with cc
700 Other kidney and urinary tract diagnoses without cc/mcc

Convert N33 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change

ICD-10-CM Codes Adjacent To N33

N31.9 Neuromuscular dysfunction of bladder, unspecified

N32 Other disorders of bladder

N32.0 Bladder-neck obstruction

N32.1 Vesicointestinal fistula

N32.2 Vesical fistula, not elsewhere classified

N32.3 Diverticulum of bladder

N32.8 Other specified disorders of bladder

N32.81 Overactive bladder

N32.89 Other specified disorders of bladder

N32.9 Bladder disorder, unspecified

N33 Bladder disorders in diseases classified elsewhere

N34 Urethritis and urethral syndrome

N34.0 Urethral abscess

N34.1 Nonspecific urethritis

N34.2 Other urethritis

N34.3 Urethral syndrome, unspecified

N35 Urethral stricture

N35.0 Post-traumatic urethral stricture

N35.01 Post-traumatic urethral stricture, male

N35.010 …… meatal

N35.011 Post-traumatic bulbous urethral stricture

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2021 ICD-10-CM Diagnosis Code N33

Bladder disorders in diseases classified elsewhere

Schistosomiasis due to Schistosoma haematobium [urinary schistosomiasis]

Schistosomiasis, unspecified

Other genitourinary symptomatic late syphilis

Tuberculosis of bladder

Candidal cystitis and urethritis

Chlamydial cystitis and urethritis

Gonococcal cystitis and urethritis, unspecified

Diphtheritic cystitis

Other genitourinary symptomatic late syphilis

Trichomonal cystitis and urethritis

Diseases of the genitourinary system

Other diseases of the urinary system