ICD-10-CM › S00-T88 › S20-S29 › S20 Superficial injury of thorax › S20.4

S20.4

Other and unspecified superficial injuries of back wall of thorax

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 7 more specific codes instead:

  • S20.40 Unspecified superficial injuries of back wall of thorax (also a header)
  • S20.41 Abrasion of back wall of thorax (also a header)
  • S20.42 Blister (nonthermal) of back wall of thorax (also a header)
  • S20.44 External constriction of back wall of thorax (also a header)
  • S20.45 Superficial foreign body of back wall of thorax (also a header)
  • S20.46 Insect bite (nonvenomous) of back wall of thorax (also a header)
  • S20.47 Other superficial bite of back wall of thorax (also a header)

This code requires a seventh character. See the rule below.

What has happened to this code

Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2012 Added to the draft code set draft Other and unspecified superficial injuries of back wall of thorax

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from S20 Superficial injury of thorax

Seventh character required

  • The appropriate 7th character is to be added to each code from category S20

Inherited from the S20-S29 section Injuries to the thorax (S20-S29)

Excludes2 - not included here

  • burns and corrosions (T20-T32)
  • effects of foreign body in bronchus (T17.5)
  • effects of foreign body in esophagus (T18.1)
  • effects of foreign body in lung (T17.8)
  • effects of foreign body in trachea (T17.4)
  • frostbite (T33-T34)
  • injuries of axilla
  • injuries of clavicle
  • injuries of scapular region
  • injuries of shoulder
  • insect bite or sting, venomous (T63.4)

Includes

  • injuries of breast
  • injuries of chest (wall)
  • injuries of interscapular area

Codes in the same group

CodeDescriptionStatus
S20.0 Contusion of breast Not billable
S20.1 Other and unspecified superficial injuries of breast Not billable
S20.2 Contusion of thorax Not billable
S20.3 Other and unspecified superficial injuries of front wall of thorax Not billable
S20.9 Superficial injury of unspecified parts of thorax Not billable