2027 ICD-10-CM Diagnosis Code N99.86Intraoperative and postprocedural complications and disorders of breast

ICD-10-CM Codes›N00–N99›N99›N99

ICD-10-CM N99.86
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N99.86 is a non-billable ICD-10-CM category code for intraoperative and postprocedural complications and disorders of breast, so it cannot be submitted on claims. Use a more specific code from this category instead, such as N99.860 and N99.861.

Code Identity

ICD-10-CM Code
N99.86
Billable Status
No — Non-Billable Category
Code Describes
Intraoperative and postprocedural complications and disorders of breast
Short Description
Intraop and postproc complications and disorders of breast
Parent Code
N99.8
Other intraoperative and postprocedural complications and disorders of genitourinary system

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
CategoryN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
This CodeN99.86Intraoperative and postprocedural complications and disorders of breast

Specific Coding for Intraop and postproc complications and disorders of breastOverview

Non-specific codes like N99.86 require more characters. Use one of these billable codes instead:

  • Use N99.860 for Intraoperative and postprocedural nipple ischemia

  • Use N99.861 for Intraoperative and postprocedural nipple necrosis

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N99.86: its own notes plus those printed at N99 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From N99 Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified applies to 44 codes
  • irradiation cystitis (N30.4-)
  • postoophorectomy osteoporosis with current pathological fracture (M80.8-)
  • postoophorectomy osteoporosis without current pathological fracture (M81.8)
From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name N99.86, its category, or a range that includes it.

Excludes2 2

These codes carry an Excludes2 note naming N99.86: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block T80-T88 Complications of surgical and medical care, not elsewhere classified
    intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-) names N99.-, which includes this code
  • T81 Complications of procedures, not elsewhere classified
    intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-) names N99.-, which includes this code

Code HistoryHistory

FY 2027AddedAdded to the ICD-10-CM code setEffective October 1, 2026.
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N99.86Overview

Is N99.86 a billable code?

No. This is a category header that groups the codes for intraoperative and postprocedural complications and disorders of breast, and headers cannot be submitted on claims. Claims for intraoperative and postprocedural complications and disorders of breast need a more specific code from this category, such as N99.860 and N99.861.