ICD-10 Code S21.0

Open wound of breast

Version 2020 Non-Billable Code

Not Valid for Submission

S21.0 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of open wound of breast. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:S21.0
Short Description:Open wound of breast
Long Description:Open wound of breast

Consider the following ICD-10 codes with a higher level of specificity:

  • S21.00 - Unspecified open wound of breast
  • S21.001 - Unspecified open wound of right breast
  • S21.001A - Unspecified open wound of right breast, initial encounter
  • S21.001D - Unspecified open wound of right breast, subsequent encounter
  • S21.001S - Unspecified open wound of right breast, sequela
  • S21.002 - Unspecified open wound of left breast
  • S21.002A - Unspecified open wound of left breast, initial encounter
  • S21.002D - Unspecified open wound of left breast, subsequent encounter
  • S21.002S - Unspecified open wound of left breast, sequela
  • S21.009 - Unspecified open wound of unspecified breast
  • S21.009A - Unspecified open wound of unspecified breast, initial encounter
  • S21.009D - Unspecified open wound of unspecified breast, subsequent encounter
  • S21.009S - Unspecified open wound of unspecified breast, sequela
  • S21.01 - Laceration without foreign body of breast
  • S21.011 - Laceration without foreign body of right breast
  • S21.011A - Laceration without foreign body of right breast, initial encounter
  • S21.011D - Laceration without foreign body of right breast, subsequent encounter
  • S21.011S - Laceration without foreign body of right breast, sequela
  • S21.012 - Laceration without foreign body of left breast
  • S21.012A - Laceration without foreign body of left breast, initial encounter
  • S21.012D - Laceration without foreign body of left breast, subsequent encounter
  • S21.012S - Laceration without foreign body of left breast, sequela
  • S21.019 - Laceration without foreign body of unspecified breast
  • S21.019A - Laceration without foreign body of unspecified breast, initial encounter
  • S21.019D - Laceration without foreign body of unspecified breast, subsequent encounter
  • S21.019S - Laceration without foreign body of unspecified breast, sequela
  • S21.02 - Laceration with foreign body of breast
  • S21.021 - Laceration with foreign body of right breast
  • S21.021A - Laceration with foreign body of right breast, initial encounter
  • S21.021D - Laceration with foreign body of right breast, subsequent encounter
  • S21.021S - Laceration with foreign body of right breast, sequela
  • S21.022 - Laceration with foreign body of left breast
  • S21.022A - Laceration with foreign body of left breast, initial encounter
  • S21.022D - Laceration with foreign body of left breast, subsequent encounter
  • S21.022S - Laceration with foreign body of left breast, sequela
  • S21.029 - Laceration with foreign body of unspecified breast
  • S21.029A - Laceration with foreign body of unspecified breast, initial encounter
  • S21.029D - Laceration with foreign body of unspecified breast, subsequent encounter
  • S21.029S - Laceration with foreign body of unspecified breast, sequela
  • S21.03 - Puncture wound without foreign body of breast
  • S21.031 - Puncture wound without foreign body of right breast
  • S21.031A - Puncture wound without foreign body of right breast, initial encounter
  • S21.031D - Puncture wound without foreign body of right breast, subsequent encounter
  • S21.031S - Puncture wound without foreign body of right breast, sequela
  • S21.032 - Puncture wound without foreign body of left breast
  • S21.032A - Puncture wound without foreign body of left breast, initial encounter
  • S21.032D - Puncture wound without foreign body of left breast, subsequent encounter
  • S21.032S - Puncture wound without foreign body of left breast, sequela
  • S21.039 - Puncture wound without foreign body of unspecified breast
  • S21.039A - Puncture wound without foreign body of unspecified breast, initial encounter
  • S21.039D - Puncture wound without foreign body of unspecified breast, subsequent encounter
  • S21.039S - Puncture wound without foreign body of unspecified breast, sequela
  • S21.04 - Puncture wound with foreign body of breast
  • S21.041 - Puncture wound with foreign body of right breast
  • S21.041A - Puncture wound with foreign body of right breast, initial encounter
  • S21.041D - Puncture wound with foreign body of right breast, subsequent encounter
  • S21.041S - Puncture wound with foreign body of right breast, sequela
  • S21.042 - Puncture wound with foreign body of left breast
  • S21.042A - Puncture wound with foreign body of left breast, initial encounter
  • S21.042D - Puncture wound with foreign body of left breast, subsequent encounter
  • S21.042S - Puncture wound with foreign body of left breast, sequela
  • S21.049 - Puncture wound with foreign body of unspecified breast
  • S21.049A - Puncture wound with foreign body of unspecified breast, initial encounter
  • S21.049D - Puncture wound with foreign body of unspecified breast, subsequent encounter
  • S21.049S - Puncture wound with foreign body of unspecified breast, sequela
  • S21.05 - Open bite of breast
  • S21.051 - Open bite of right breast
  • S21.051A - Open bite of right breast, initial encounter
  • S21.051D - Open bite of right breast, subsequent encounter
  • S21.051S - Open bite of right breast, sequela
  • S21.052 - Open bite of left breast
  • S21.052A - Open bite of left breast, initial encounter
  • S21.052D - Open bite of left breast, subsequent encounter
  • S21.052S - Open bite of left breast, sequela
  • S21.059 - Open bite of unspecified breast
  • S21.059A - Open bite of unspecified breast, initial encounter
  • S21.059D - Open bite of unspecified breast, subsequent encounter
  • S21.059S - Open bite of unspecified breast, sequela

Code Classification

  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the thorax (S20-S29)
      • Open wound of thorax (S21)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Breast Diseases

Most women experience breast changes at some time. Your age, hormone levels, and medicines you take may cause lumps, bumps, and discharges (fluids that are not breast milk).

If you have a breast lump, pain, discharge or skin irritation, see your health care provider. Minor and serious breast problems have similar symptoms. Although many women fear cancer, most breast problems are not cancer.

Some common breast changes are

  • Fibrocystic breast changes - lumpiness, thickening and swelling, often just before a woman's period
  • Cysts - fluid-filled lumps
  • Fibroadenomas - solid, round, rubbery lumps that move easily when pushed, occurring most in younger women
  • Intraductal papillomas - growths similar to warts near the nipple
  • Blocked milk ducts
  • Milk production when a woman is not breastfeeding

NIH: National Cancer Institute


[Learn More]

Wounds and Injuries

An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening. Injuries can happen at work or play, indoors or outdoors, driving a car, or walking across the street.

Wounds are injuries that break the skin or other body tissues. They include cuts, scrapes, scratches, and punctured skin. They often happen because of an accident, but surgery, sutures, and stitches also cause wounds. Minor wounds usually aren't serious, but it is important to clean them. Serious and infected wounds may require first aid followed by a visit to your doctor. You should also seek attention if the wound is deep, you cannot close it yourself, you cannot stop the bleeding or get the dirt out, or it does not heal.

Other common types of injuries include

  • Animal bites
  • Bruises
  • Burns
  • Dislocations
  • Electrical injuries
  • Fractures
  • Sprains and strains

[Learn More]