W49.01 Hair causing external constriction

Non-billable ICD-10-CM code.

Applies from W49 Exposure to other inanimate mechanical forces

Includes

• exposure to abnormal gravitational [G] forces
• exposure to inanimate mechanical forces NEC

Excludes1 (never code together)

• exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)

7th character note

• The appropriate 7th character is to be added to each code from category W49

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Code annotations containing back-references to W49.01

Back-references to W49.0

• Use Additional: S30.842 External constriction of penis ("cause code to identify the constricting item (W49.0-)")
• Use Additional: S60.34 External constriction of thumb ("cause code to identify the constricting item (W49.0-)")
• Use Additional: S60.44 External constriction of fingers ("cause code to identify the constricting item (W49.0-)")

Diagnosis Index entries for W49.01

• Constriction (external) › hair

Nearby codes

• W49 Exposure to other inanimate mechanical forces
• W49.0 Item causing external constriction
• W49.01 Hair causing external constriction (this code)
• W49.01XA Hair causing external constriction, initial encounter
• W49.01XD Hair causing external constriction, subsequent encounter
• W49.01XS Hair causing external constriction, sequela
• W49.02 String or thread causing external constriction
• W49.02XA String or thread causing external constriction, initial encounter