N99.51 – Complication of cystostomy

ICD-10-CM 2027 diagnosis code · Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified (N99)

Non-billable header

ICD-10-CM code N99.51

Code: N99.51 (claims format: N9951)
Description: Complication of cystostomy
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 14. Diseases of the genitourinary system (N00-N99)
Block: N99 Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified (N99)
Parent codes: N99 › N99.5

Billable codes under N99.51

N99.51 is a header code and cannot be used on claims. Choose the most specific code:

N99.510 – Cystostomy hemorrhageBillable
N99.511 – Cystostomy infectionBillable
N99.512 – Cystostomy malfunctionBillable
N99.518 – Other cystostomy complicationBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

N99 – Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified

Excludes2 (not included here):

irradiation cystitis (N30.4-)
postoophorectomy osteoporosis with current pathological fracture (M80.8-)
postoophorectomy osteoporosis without current pathological fracture (M81.8)

N99.5 – Complications of stoma of urinary tract

Excludes2 (not included here):

mechanical complication of urinary catheter (T83.0-)

Related codes in N99.5

Frequently asked questions

What is ICD-10 code N99.51?

N99.51 is the ICD-10-CM code for complication of cystostomy, in the block N99 (Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified (N99)).

Is N99.51 a billable code?

No. N99.51 is a header code with more specific child codes; report one of the billable codes listed above.

What category does N99.51 belong to?

It belongs to category N99 – Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.