ICD-10-CM › S00-T88 › S30-S39 › S30.84A External constriction of flank › S30.84AS

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

Valid FY2026 onwards.

What has happened to this code

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 S30 Superficial injury of abdomen, lower back, pelvis and external genitals

Seventh character required

• The appropriate 7th character is to be added to each code from category S30

Excludes2 - not included here

• superficial injury of hip (S70.-)

Inherited from the S30-S39 section Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39)

Excludes2 - not included here

• burns and corrosions (T20-T32)
• effects of foreign body in anus and rectum (T18.5)
• effects of foreign body in genitourinary tract (T19.-)
• effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)
• frostbite (T33-T34)
• insect bite or sting, venomous (T63.4)

Includes

• injuries to the abdominal wall
• injuries to the anus
• injuries to the buttock
• injuries to the external genitalia
• injuries to the flank
• injuries to the groin

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
• Syndrome > hair tourniquet
• Injury > superficial NEC > external constriction
• Constriction > external > flank

Codes in the same group

Code	Description	Status
S30.84AA	External constriction of flank, initial encounter	Valid
S30.84AD	External constriction of flank, subsequent encounter	Valid