ICD-10-CM › S00-T88 › S90-S99 › S90.446 External constriction, unspecified... › S90.446S

S90.446S

External constriction, unspecified lesser toe(s), sequela

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 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. FY2007 Added to the draft code set draft External constriction, unspecified lesser toe(s), sequela

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 S90 Superficial injury of ankle, foot and toes

Seventh character required

  • The appropriate 7th character is to be added to each code from category S90

Inherited from the S90-S99 section Injuries to the ankle and foot (S90-S99)

Excludes2 - not included here

  • burns and corrosions (T20-T32)
  • fracture of ankle and malleolus (S82.-)
  • frostbite (T33-T34)
  • 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
S90.446A External constriction, unspecified lesser toe(s), initial encounter Valid
S90.446D External constriction, unspecified lesser toe(s), subsequent encounter Valid