S04.2 is the ICD-10 code for Injury of trochlear nerve. It is a four-character subcategory of S04 (Injury of cranial nerves), the most specific level in the WHO edition. It belongs to the block S00–S09 (Injuries to the head) in Chapter XIX, Injury, poisoning and certain other consequences of external causes.
- Code type
- Subcategory (4 characters)
- Chapter
- XIX · S00–T98
- Classification
- WHO ICD-10, 2019 version
What S04.2 includes
Conditions and terms that are coded here.
- 4th cranial nerve
S04.2 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
S04.2Skade på nervus trochlearis [4. hjernenerve]
DS042Læsion af nervus trochlearis
S04.2Telahermon vamma
S04.2Verletzung des N. trochlearis
S04.2Lésion traumatique du nerf pathétique
S04.2letsel van nervus trochlearis
Listed through more specific codes:
- S04.20XAInjury of trochlear nerve, unspecified side, initial encounter
- S04.20XDInjury of trochlear nerve, unspecified side, subsequent encounter
- S04.20XSInjury of trochlear nerve, unspecified side, sequela
- S04.21XAInjury of trochlear nerve, right side, initial encounter
- S04.21XDInjury of trochlear nerve, right side, subsequent encounter
- S04.21XSInjury of trochlear nerve, right side, sequela
- S04.22XAInjury of trochlear nerve, left side, initial encounter
- S04.22XDInjury of trochlear nerve, left side, subsequent encounter
- and 1 more national subcodes
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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