2020 ICD-10-CM Diagnosis Code N31

Neuromuscular dysfunction of bladder, not elsewhere classified

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • N31 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Neuromuscular dysfunction of bladder, NEC
  • The 2020 edition of ICD-10-CM N31 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of N31 - other international versions of ICD-10 N31 may differ.
Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the 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.
  • code to identify any associated urinary incontinence (
    ICD-10-CM Diagnosis Code N39.3

    Stress incontinence (female) (male)

      2016 2017 2018 2019 2020 Billable/Specific Code
    Code Also
    • any associated overactive bladder (N32.81)
    Type 1 Excludes
    N39.3-
    ICD-10-CM Diagnosis Code N39.4

    Other specified urinary incontinence

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code Also
    • any associated overactive bladder (N32.81)
    Type 1 Excludes
    • enuresis NOS (R32)
    • functional urinary incontinence (R39.81)
    • urinary incontinence associated with cognitive impairment (R39.81)
    • urinary incontinence NOS (R32)
    • urinary incontinence of nonorganic origin (F98.0)
    N39.4-
    )
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 N31. 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.
  • cord bladder NOS (
    ICD-10-CM Diagnosis Code G95.89

    Other specified diseases of spinal cord

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Cord bladder NOS
    • Drug-induced myelopathy
    • Radiation-induced myelopathy
    Type 1 Excludes
    G95.89
    )
  • neurogenic bladder due to cauda equina syndrome (
    ICD-10-CM Diagnosis Code G83.4

    Cauda equina syndrome

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Neurogenic bladder due to cauda equina syndrome
    Type 1 Excludes
    • cord bladder NOS (G95.89)
    • neurogenic bladder NOS (N31.9)
    G83.4
    )
  • neuromuscular dysfunction due to spinal cord lesion (
    ICD-10-CM Diagnosis Code G95.89

    Other specified diseases of spinal cord

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Cord bladder NOS
    • Drug-induced myelopathy
    • Radiation-induced myelopathy
    Type 1 Excludes
    G95.89
    )
The following code(s) above N31 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 N31:
  • N00-N99
    2020 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
    2020 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
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
Code annotations containing back-references to N31:
  • Type 1 Excludes: N33
    , G95.8
    ICD-10-CM Diagnosis Code N33

    Bladder disorders in diseases classified elsewhere

      2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
    Code First
    • underlying disease, such as:
    • schistosomiasis (B65.0-B65.9)
    Type 1 Excludes
    • bladder disorder in syphilis (A52.76)
    • bladder disorder in tuberculosis (A18.12)
    • candidal cystitis (B37.41)
    • chlamydial cystitis (A56.01)
    • cystitis in gonorrhea (A54.01)
    • cystitis in neurogenic bladder (N31.-)
    • diphtheritic cystitis (A36.85)
    • syphilitic cystitis (A52.76)
    • trichomonal cystitis (A59.03)
    ICD-10-CM Diagnosis Code G95.8

    Other specified diseases of spinal cord

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • neurogenic bladder NOS (N31.9)
    • neurogenic bladder due to cauda equina syndrome (G83.4)
    • neuromuscular dysfunction of bladder without spinal cord lesion (N31.-)
ICD-10-CM Codes Adjacent To N31
N30.31 …… with hematuria
N30.4 Irradiation cystitis
N30.40 …… without hematuria
N30.41 …… with hematuria
N30.8 Other cystitis
N30.80 …… without hematuria
N30.81 …… with hematuria
N30.9 Cystitis, unspecified
N30.90 …… without hematuria
N30.91 …… with hematuria
N31 Neuromuscular dysfunction of bladder, not elsewhere classified
N31.0 Uninhibited neuropathic bladder, not elsewhere classified
N31.1 Reflex neuropathic bladder, not elsewhere classified
N31.2 Flaccid neuropathic bladder, not elsewhere classified
N31.8 Other neuromuscular dysfunction of bladder
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

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