Open bite of lower back and pelvis without penetration into retroperitoneum

• birth trauma (P10-P15)
• obstetric trauma (O70-O71)

code to identify any retained foreign body, if applicable (Z18.-)

• Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
• The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

• 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

• 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)

traumatic amputation of part of abdomen, lower back and pelvis (S38.2-, S38.3)

• open wound of hip (S71.00-S71.02)
• open fracture of pelvis (S32.1--S32.9 with 7th character B)

• any associated:
• spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)
• wound infection

The appropriate 7th character is to be added to each code from category S31

Bite of lower back and pelvis NOS

superficial bite of lower back and pelvis (S30.860, S30.870)