Injury of left internal carotid artery, intracranial portion, not elsewhere classified with loss of consciousness status unknown, subsequent encounter

• 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.

traumatic brain injury

head injury NOS (S09.90)

code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)

• any associated:
• open wound of head (S01.-)
• skull fracture (S02.-)

7th characters D and S do not apply to codes in category S06 with 6th character 7 - death due to brain injury prior to regaining consciousness, or 8 - death due to other cause prior to regaining consciousness.

The appropriate 7th character is to be added to each code from category S06, except as noted below

• injuries of ear
• injuries of eye
• injuries of face [any part]
• injuries of gum
• injuries of jaw
• injuries of oral cavity
• injuries of palate
• injuries of periocular area
• injuries of scalp
• injuries of temporomandibular joint area
• injuries of tongue
• injuries of tooth

• burns and corrosions (T20-T32)
• effects of foreign body in ear (T16)
• effects of foreign body in larynx (T17.3)
• effects of foreign body in mouth NOS (T18.0)
• effects of foreign body in nose (T17.0-T17.1)
• effects of foreign body in pharynx (T17.2)
• effects of foreign body on external eye (T15.-)
• frostbite (T33-T34)
• insect bite or sting, venomous (T63.4)

for any associated infection

Injury of left internal carotid artery, intracranial portion, not elsewhere classified NOS