Injury, poisoning and certain other consequences of external causes (S00-T88)

Note:
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.
Use additional
code to identify any retained foreign body, if applicable (Z18.-)
Excludes 1:
birth trauma (P10-P15)
obstetric trauma (O70-O71)

Injuries to the head (S00-S09)

Includes:
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
Code also
for any associated infection
Excludes 2:
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)
S00 Superficial injury of head [+]
Excludes 1: diffuse cerebral contusion (S06.2-)
focal cerebral contusion (S06.3-)
injury of eye and orbit (S05.-)
open wound of head (S01.-)
The appropriate 7th character is to be added to each code from category S00
A - initial encounter
D - subsequent encounter
S - sequela
S01 Open wound of head [+]
Code also any associated:
injury of cranial nerve (S04.-)
injury of muscle and tendon of head (S09.1-)
intracranial injury (S06.-)
wound infection
Excludes 1: open skull fracture (S02.- with 7th character B)
Excludes 2: injury of eye and orbit (S05.-)
traumatic amputation of part of head (S08.-)
The appropriate 7th character is to be added to each code from category S01
A - initial encounter
D - subsequent encounter
S - sequela
S02 Fracture of skull and facial bones [+]
Note: A fracture not indicated as open or closed should be coded to closed
Code also any associated intracranial injury (S06.-)
The appropriate 7th character is to be added to each code from category S02
A - initial encounter for closed fracture
B - initial encounter for open fracture
D - subsequent encounter for fracture with routine healing
G - subsequent encounter for fracture with delayed healing
K - subsequent encounter for fracture with nonunion
S - sequela
S03 Dislocation and sprain of joints and ligaments of head [+]
Includes: avulsion of joint (capsule) or ligament of head
laceration of cartilage, joint (capsule) or ligament of head
sprain of cartilage, joint (capsule) or ligament of head
traumatic hemarthrosis of joint or ligament of head
traumatic rupture of joint or ligament of head
traumatic subluxation of joint or ligament of head
traumatic tear of joint or ligament of head
Code also any associated open wound
Excludes 2: Strain of muscle or tendon of head (S09.1)
The appropriate 7th character is to be added to each code from category S03
A - initial encounter
D - subsequent encounter
S - sequela
S04 Injury of cranial nerve [+]
The selection of side should be based on the side of the body being affected
Code first any associated intracranial injury (S06.-)
Code also any associated:
open wound of head (S01.-)
skull fracture (S02.-)
The appropriate 7th character is to be added to each code from category S04
A - initial encounter
D - subsequent encounter
S - sequela
S05 Injury of eye and orbit [+]
Includes: open wound of eye and orbit
Excludes 2: 2nd cranial [optic] nerve injury (S04.0-)
3rd cranial [oculomotor] nerve injury (S04.1-)
open wound of eyelid and periocular area (S01.1-)
orbital bone fracture (S02.1-, S02.3-, S02.8-)
superficial injury of eyelid (S00.1-S00.2)
The appropriate 7th character is to be added to each code from category S05
A - initial encounter
D - subsequent encounter
S - sequela
S06 Intracranial injury [+]
Note: 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.
Includes: traumatic brain injury
Code also any associated:
open wound of head (S01.-)
skull fracture (S02.-)
Use additional code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
Excludes 1: head injury NOS (S09.90)
The appropriate 7th character is to be added to each code from category S06
A - initial encounter
D - subsequent encounter
S - sequela
S07 Crushing injury of head [+]
Use additional code for all associated injuries, such as:
Use additional intracranial injuries (S06.-)
Use additional skull fractures (S02.-)
The appropriate 7th character is to be added to each code from category S07
A - initial encounter
D - subsequent encounter
S - sequela
S08 Avulsion and traumatic amputation of part of head [+]
An amputation not identified as partial or complete should be coded to complete
The appropriate 7th character is to be added to each code from category S08
A - initial encounter
D - subsequent encounter
S - sequela
S09 Other and unspecified injuries of head [+]
The appropriate 7th character is to be added to each code from category S09
A - initial encounter
D - subsequent encounter
S - sequela

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