664: Trauma to perineum and vulva during delivery
Requires fifth digit; valid digits are in [brackets] under each code. see beginning of section 660-669 for definitions.
Includes:
damage from instruments
that from extension of episiotomy
664.3 Fourth-degree perineal laceration
[0,1,4]
Perineal laceration, rupture, or tear as classifiable to 664.2 and involving also:
anal mucosa
rectal mucosa

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