9C81.1 Fourth nerve palsy
International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01
inclusions
- isolated trochlear nerve palsy
postcoordination
Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.
Laterality - only one may be selected
Course - only one may be selected
synonyms
- Fourth nerve palsy
- 4th nerve palsy
- fourth cranial nerve paralysis
- fourth cranial nerve paresis
- superior oblique palsy
- trochlear nerve palsy
- trochlear nerve paralysis
- trochlear nerve weakness
- isolated trochlear nerve palsy
- atrophy of fourth cranial nerve
- atrophy of trochlear nerve
- Congenital trochlear nerve palsy
- Congenital superior oblique palsy
- Acquired trochlear nerve palsy
- Acute trochlear nerve palsy
- Chronic trochlear nerve palsy
- Chronic trochlear nerve palsy, spread of comitance
- Neuritis of fourth cranial nerve
- inflammation of trochlear nerve
- neuritis of trochlear nerve
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