S04.21XA Injury of trochlear nerve, right side, initial encounter
Instructional Notes:
S04.21XA Description: Injury of trochlear nerve, right side, initial encounter ↓
S04.21 Description: Injury of trochlear nerve, right side ↓
S04.2 Description: Injury of trochlear nerve Inclusion Term:
Injury of 4th cranial nerve
↓
S04 Description: Injury of cranial nerve Code First:
any associated intracranial injury (S06.-)
Inclusion Term:
The selection of side should be based on the side of the body being affected
Code Also: ['any associated:', 'open wound of head (S01.-)', 'skull fracture (S02.-)'] ↓
S00-S09 Description: Injuries to the head (S00-S09) Exclude2:
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)
Include:
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'] ↓
S00-T88 Description: Injury, poisoning and certain other consequences of external causes Exclude2:
birth trauma (P10-P15)
obstetric trauma (O70-O71)
Notes:
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
Use Additional Code:
code to identify any retained foreign body, if applicable (Z18.-)