ICD-10-CM › S00-T88 › S80-S89 › S80.2 Other superficial injuries of knee › S80.22

S80.22

Blister (nonthermal) of knee

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 3 more specific codes instead:

  • S80.221 Blister (nonthermal), right knee (also a header)
  • S80.222 Blister (nonthermal), left knee (also a header)
  • S80.229 Blister (nonthermal), unspecified knee (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 Blister (nonthermal) of knee

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 S80 Superficial injury of knee and lower leg

Seventh character required

  • The appropriate 7th character is to be added to each code from category S80

Excludes2 - not included here

  • superficial injury of ankle and foot (S90.-)

Inherited from the S80-S89 section Injuries to the knee and lower leg (S80-S89)

Excludes2 - not included here

  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
  • insect bite or sting, venomous (T63.4)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
S80.21 Abrasion of knee Not billable
S80.24 External constriction of knee Not billable
S80.25 Superficial foreign body of knee Not billable
S80.26 Insect bite (nonvenomous) of knee Not billable
S80.27 Other superficial bite of knee Not billable