N99.511 – Cystostomy infection

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

Billable code

ICD-10-CM code N99.511

Code: N99.511 (claims format: N99511)
Description: Cystostomy infection
Billable: Yes – valid for HIPAA-covered transactions
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 › N99.51

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-)

Index terms for N99.511

Entries in the ICD-10-CM alphabetic index that lead to this code:

Complication, cystostomy, infection

Related codes in N99.51

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

Frequently asked questions

What is ICD-10 code N99.511?

N99.511 is the ICD-10-CM code for cystostomy infection, in the block N99 (Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified (N99)).

Is N99.511 a billable code?

Yes. N99.511 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does N99.511 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.