N99-N99
Medium Complexity

Intraoperative and postprocedural complications and disorders of genitourinary system

Primary Specialty: Urology
Last Updated: 2025-09-09

ICD-10 Codes (0)

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Updates & Changes

FY 2026 Updates

Current Year

New Codes (2)

N18.30
Chronic kidney disease, stage 3a (GFR 45-59)
N18.31
Chronic kidney disease, stage 3b (GFR 30-44)

Revised Codes (1)

N18.6
End stage renal disease - updated to align with KDIGO guidelines

Deleted Codes(1)

N18.3
Chronic kidney disease, stage 3 (moderate) - replaced by more specific 3a/3b staging

Historical Changes

  • FY 2025: Routine maintenance updates with minor terminology clarifications
  • FY 2024: Enhanced specificity requirements for certain code ranges
  • FY 2023: Updated documentation guidelines for improved clarity

Upcoming Changes

  • Proposed updates pending review by Coordination and Maintenance Committee
  • Under consideration: Enhanced digital health integration codes

Implementation Guidance

  • Review all FY 2026 updates for N99-N99 codes before implementation
  • Always verify the most current codes in the ICD-10-CM manual
  • Ensure clinical documentation supports the selected diagnosis codes
  • +3 more guidance items...

Range Overview

high priority

The N99-N99 code range in ICD-10 pertains to intraoperative and postprocedural complications and disorders of the genitourinary system. These codes are used to document complications that occur during or after surgical procedures involving the urinary and reproductive systems. The scope of these codes includes complications such as postprocedural hemorrhage, infection, and functional disturbances.

Key Usage Points:

  • These codes are used for complications arising from genitourinary procedures.
  • They cover both intraoperative and postprocedural complications.
  • The codes specify the type of complication and the procedure involved.
  • They should be used in conjunction with codes for the underlying condition.
  • Documentation should clearly indicate the relationship between the procedure and the complication.

Coding Guidelines

When to Use:

  • When a patient develops a urinary tract infection following a bladder procedure.
  • When a patient experiences intraoperative bleeding during a prostatectomy.
  • When a patient has a postprocedural functional disturbance following a kidney transplant.
  • When a patient develops a postprocedural hemorrhage after a hysterectomy.

When NOT to Use:

  • When the complication is not related to a genitourinary procedure.
  • When the complication occurs before the procedure.
  • When the complication is a known risk or expected outcome of the procedure.
  • When the complication is due to patient's non-compliance or self-inflicted.

Code Exclusions

Always verify exclusions in the ICD-10 manual as they may change with updates.

Documentation Requirements

Documentation for these codes should clearly indicate the type of procedure, the complication, and the causal relationship between them. It should also include the timing of the complication (intraoperative or postprocedural).

Clinical Information:

  • Type of genitourinary procedure performed
  • Type of complication
  • Timing of the complication
  • Causal relationship between the procedure and the complication
  • Severity and impact of the complication on patient's health

Supporting Evidence:

  • Operative report
  • Postoperative notes
  • Laboratory and imaging reports
  • Patient's medical history and physical examination findings
Good Documentation Example:

Patient underwent a prostatectomy. Intraoperatively, significant bleeding occurred requiring transfusion. The bleeding was directly related to the procedure.

Poor Documentation Example:

Patient had bleeding during surgery.

Common Documentation Errors:

  • Not specifying the type of complication
  • Not indicating the timing of the complication
  • Not establishing a causal relationship between the procedure and the complication
  • Not using additional codes when necessary to provide a complete picture of the patient's condition

Range Statistics

Total Codes
0
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:14

Coding Complexity

Medium
Complexity Rating

The complexity of these codes is medium due to the need to accurately identify the type of complication, its timing, and its relationship to the procedure. Additionally, coders must stay updated with changes in coding guidelines and use additional codes when necessary.

Key Factors:
  • Determining the causal relationship between the procedure and the complication
  • Identifying the timing of the complication
  • Using additional codes when necessary
  • Staying updated with changes in coding guidelines

Specialty Focus

These codes are primarily used by urologists, gynecologists, and transplant surgeons. They are also relevant for anesthesiologists and other specialists involved in genitourinary procedures.

Primary Specialties:
Urology
40%
Gynecology
30%
Transplant Surgery
20%
Clinical Scenarios:
  • A patient develops a urinary tract infection following a cystoscopy.
  • A patient experiences intraoperative bleeding during a prostatectomy.
  • A patient has a postprocedural functional disturbance following a kidney transplant.
  • A patient develops a postprocedural hemorrhage after a hysterectomy.

Resources & References

Resources for these codes include the ICD-10 manual, clinical reference materials, and educational resources on genitourinary procedures and their complications.

Official Guidelines:

  • ICD-10-CM Official Guidelines for Coding and Reporting
  • American Urological Association guidelines
  • American College of Obstetricians and Gynecologists guidelines

Clinical References:

  • Clinical guidelines on genitourinary procedures
  • Textbooks and articles on genitourinary surgery

Educational Materials:

  • ICD-10 coding training materials
  • Webinars and workshops on genitourinary coding

Frequently Asked Questions

Can N99-N99 codes be used for complications that occur before a genitourinary procedure?

No, these codes are specifically for intraoperative and postprocedural complications. Complications that occur before the procedure should be coded separately.