S02.1
Fracture of base of skull
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 14 never code together
S02.1code
S00-S09block
Excludes2
- burns and corrosions (T20-T32)T20-T32
- effects of foreign body in ear (T16)T16
- effects of foreign body in larynx (T17.3)T17.3
- effects of foreign body in mouth NOS (T18.0)T18.0
- effects of foreign body in nose (T17.0-T17.1)T17.0-T17.1
- effects of foreign body in pharynx (T17.2)T17.2
- effects of foreign body on external eye (T15.-)T15.-
- frostbite (T33-T34)T33-T34
- insect bite or sting, venomous (T63.4)T63.4
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 6
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
Instructional notes 18
S02code
Notes
- A fracture not indicated as open or closed should be coded to closed
Code also
- any associated intracranial injury (S06.-)S06.-
S00-S09block
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
S00-T88chapter
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
- 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
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 8 same parent — S02
S02.0 Fracture of vault of skull category S02.2 Fracture of nasal bones category S02.3 Fracture of orbital floor category S02.4 Fracture of malar, maxillary and zygoma bones category S02.5 Fracture of tooth (traumatic) category S02.6 Fracture of mandible category S02.8 Fractures of other specified skull and facial bones category S02.9 Fracture of unspecified skull and facial bones category
Subordinate codes 4
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.