NA02.1

ICD-11 MMS 2026-01

Fracture of base of skull

Description

Fractures which extend through the base of the skull, usually involving the petrous bone.

Coding note from above levels

This Block includes the following: • 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

Excludes

  • NA02.2 – fracture of orbit NOS
  • NA02.21 – Fracture of orbital floor

Exclusions from above levels

  • http://id.who.int/icd/entity/152692065 – Frostbite
  • http://id.who.int/icd/entity/163532889 – Burns
  • ND70 – Foreign body on external eye
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  • ND71 – Foreign body in ear
  • ND72.1 – Foreign body in nostril
  • ND72.2 – Foreign body in pharynx
  • ND72.3 – Foreign body in larynx
  • ND73.0 – Foreign body in mouth
  • FB80.7 – Malunion of fracture
  • FB80.8 – Nonunion of fracture
  • FB80.A – Stress fracture, not elsewhere classified
  • FB80.B – Pathological fracture
  • http://id.who.int/icd/entity/624443803 – Birth injury
  • JB0A – Certain specified obstetric trauma

Child codes

  • NA02.10 – Fracture of anterior fossa of base of skull
  • NA02.11 – Fracture of middle fossa of base of skull
  • NA02.12 – Fracture of posterior fossa of base of skull
  • NA02.13 – Fracture of sinus of ethmoid bone of skull
  • NA02.14 – Fracture of frontal sinus of skull
  • NA02.15 – Fracture of sphenoid bone of skull
  • NA02.16 – Fracture of occipital condyle of skull, type I
  • NA02.17 – Fracture of occipital condyle of skull, type II
  • NA02.18 – Fracture of occipital condyle of skull, type III
  • NA02.19 – Fracture of other part of occipital bone of skull
  • NA02.1A – Other fractures of base of skull
  • NA02.1Z – Fracture of base of skull, unspecified

Sibling codes

  • NA02.0 – Fracture of vault of skull
  • NA02.2 – Orbital fracture
  • NA02.3 – Fracture of nasal bones
  • NA02.4 – Fracture of maxilla
  • NA02.5 – Fracture of zygoma
  • NA02.7 – Fracture of mandible
  • NA02.8 – Multiple fractures involving skull or facial bones
  • NA02.Y – Fracture of other specified skull or facial bones
  • NA02.Z – Fracture of skull or facial bones, part unspecified

Foundation entity

Fracture of base of skull – http://id.who.int/icd/entity/45247885

Allowed postcoordination axes

Part of: NA02: Fracture of skull or facial bones › 22: Injury, poisoning or certain other consequences of external causes