2022 ICD-10-CM Code S20.344A

External constriction of middle front wall of thorax, initial encounter

Version 2021

Valid for Submission

ICD-10:S20.344A
Short Description:External constriction of middle front wall of thorax, init
Long Description:External constriction of middle front wall of thorax, initial encounter

Code Classification

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

S20.344A is a billable diagnosis code used to specify a medical diagnosis of external constriction of middle front wall of thorax, initial encounter. The code S20.344A is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

S20.344A is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like external constriction of middle front wall of thorax. According to ICD-10-CM Guidelines an "initial encounter" doesn't necessarily means "initial visit". The 7th character should be used when the patient is undergoing active treatment regardless if new or different providers saw the patient over the course of a treatment. The appropriate 7th character codes should also be used even if the patient delayed seeking treatment for a condition.

Coding Guidelines

The appropriate 7th character is to be added to each code from block Superficial injury of thorax (S20). Use the following options for the aplicable episode of care:

Replacement Code

S20344A replaces the following previously assigned ICD-10 code(s):

Code History

  • FY 2021 - Code Added, effective from 10/1/2020 through 9/30/2021