ICD-10-CM › S00-T88 › S90-S99 › S90.4 Other superficial injuries of toe › S90.44
External constriction of toe
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 6 more specific codes instead:
- S90.441 External constriction, right great toe (also a header)
- S90.442 External constriction, left great toe (also a header)
- S90.443 External constriction, unspecified great toe (also a header)
- S90.444 External constriction, right lesser toe(s) (also a header)
- S90.445 External constriction, left lesser toe(s) (also a header)
- S90.446 External constriction, unspecified lesser toe(s) (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.
- FY2012 Added to the draft code set draft External constriction of toe
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.
- Tourniquet syndrome
- Syndrome > tourniquet
- Hair > tourniquet syndrome
- Injury > toe > superficial
- Syndrome > hair tourniquet
- Constriction > external > heel
- Constriction > external > foot > toe
- Constriction > external > nail > toe
- Constriction > external > digit > foot
- Constriction > external > phalanges > toe
- Constriction > external > subungual > toe
- Injury > superficial NEC > nail NEC > toe
- Injury > superficial NEC > phalanges > toe
- Injury > superficial NEC > subungual > toe
- Injury > superficial NEC > external constriction
- Injury > superficial NEC > toe > external constriction
- Injury > superficial NEC > foot > external constriction
- Constriction > external > toe
- Hair > tourniquet syndrome > toe
- Constriction > external > toe > great
Codes in the same group
| Code | Description | Status |
|---|---|---|
| S90.41 | Abrasion of toe | Not billable |
| S90.42 | Blister (nonthermal) of toe | Not billable |
| S90.45 | Superficial foreign body of toe | Not billable |
| S90.46 | Insect bite (nonvenomous) of toe | Not billable |
| S90.47 | Other superficial bite of toe | Not billable |