ICD-10-CM > S00-T88 > T20-T25 > T21 > T21.3 > T21.37 T21.37 Burn of third degree of female genital region Non-Billable/Non-Specific Applicable To Burn of third degree of labium (majus) (minus)Burn of third degree of perineumBurn of third degree of vulva Type 2 Excludes burn of vagina (T28.3) Codes T21.37XA..., initial encounterT21.37XD..., subsequent encounterT21.37XS..., sequela