2022 ICD-10-CM Code S00.44

External constriction of ear

Version 2021

Not Valid for Submission

Short Description:External constriction of ear
Long Description:External constriction of ear

Code Classification

  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the head (S00-S09)
      • Superficial injury of head (S00)

S00.44 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of external constriction of ear. The code is not specific and is NOT valid for the year 2022 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Coding Guidelines

The appropriate 7th character is to be added to each code from block Superficial injury of head (S00). Use the following options for the aplicable episode of care:

Specific Coding for External constriction of ear

Non-specific codes like S00.44 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for external constriction of ear:

  • NON-BILLABLE CODE - S00.441 for External constriction of right ear
  • BILLABLE CODE - Use S00.441A for initial encounter
  • BILLABLE CODE - Use S00.441D for subsequent encounter
  • BILLABLE CODE - Use S00.441S for sequela
  • NON-BILLABLE CODE - S00.442 for External constriction of left ear
  • BILLABLE CODE - Use S00.442A for initial encounter
  • BILLABLE CODE - Use S00.442D for subsequent encounter
  • BILLABLE CODE - Use S00.442S for sequela
  • NON-BILLABLE CODE - S00.449 for External constriction of unspecified ear
  • BILLABLE CODE - Use S00.449A for initial encounter
  • BILLABLE CODE - Use S00.449D for subsequent encounter
  • BILLABLE CODE - Use S00.449S for sequela

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code S00.44 are found in the index:

Information for Patients


A bruise is a mark on your skin caused by blood trapped under the surface. It happens when an injury crushes small blood vessels but does not break the skin. Those vessels break open and leak blood under the skin.

Bruises are often painful and swollen. You can get skin, muscle and bone bruises. Bone bruises are the most serious.

It can take months for a bruise to fade, but most last about two weeks. They start off a reddish color, and then turn bluish-purple and greenish-yellow before returning to normal. To reduce bruising, ice the injured area and elevate it above your heart. See your health care provider if you seem to bruise for no reason, or if the bruise appears to be infected.

[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)