H49.10
BillableFourth [trochlear] nerve palsy, unspecified eye
Fourth [trochlear] nerve palsy, unspecified eye
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •diabetes mellitus related eye conditions, , ,E09.3, E10.3, E11.3, E13.3
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury (trauma) of eye and orbitS05
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •syphilis related eye disorders, , ,A50.01, A50.3, A51.43, A52.71
- •nystagmus and other irregular eye movementsH55
- •internal ophthalmoplegiaH52.51
- •internuclear ophthalmoplegiaH51.2
- •progressive supranuclear ophthalmoplegiaG23.1
Related Codes(3)
Also Known As / Clinical Terms(61)
SNOMED CT
- Abnormal nervous system function13028004
- Abnormal neurological function13028004
- 4th nerve palsy20610004
- Fourth cranial nerve palsy20610004
- Fourth cranial nerve paralysis20610004
- Fourth cranial nerve paresis20610004
- Fourth nerve palsy20610004
- IV nerve palsy20610004
- Superior oblique palsy20610004
- Trochlear nerve palsy20610004
- Trochlear nerve paralysis20610004
- Trochlear nerve weakness20610004
- Oculomotor nerve finding106153001
- Third cranial nerve finding106153001
- Fourth cranial nerve finding106154007
- Trochlear nerve finding106154007
- Abducens nerve finding106156009
- Sixth cranial nerve finding106156009
- Familial congenital palsy of trochlear nerve782679002
- Congenital fourth cranial nerve palsy1204418008
- Congenital palsy of trochlear nerve1204418008
- Congenital superior oblique palsy1204418008
- Congenital trochlear nerve palsy1204418008
- Acute trochlear nerve palsy1208901009
- Acquired trochlear nerve palsy1208908003
- Chronic fourth nerve palsy with spread of comitance1217663003
- Chronic trochlear nerve palsy with spread of comitance1217663003
- Chronic fourth nerve palsy1217665005
- Chronic trochlear nerve palsy1217665005
- Cranial nerves three, four and six abnormal450291000124108
Clinical Terms
- Acquired trochlear nerve palsy
- Fourth nerve palsy
- Chronic fourth nerve palsy with spread of comitance
- Fourth cranial nerve palsy
- IV nerve palsy
- Trochlear nerve weakness
- Fourth cranial nerve paralysis
- Cranial nerves three, four and six abnormal
- Congenital fourth cranial nerve palsy
- Familial congenital palsy of trochlear nerve
- Oculomotor nerve finding
- Chronic trochlear nerve palsy
- Congenital trochlear nerve palsy
- Abnormal nervous system function
- Third cranial nerve finding
- Abnormal neurological function
- Congenital superior oblique palsy
- Trochlear nerve paralysis
- Fourth cranial nerve finding
- Fourth cranial nerve paresis
- Chronic fourth nerve palsy
- Congenital palsy of trochlear nerve
- Superior oblique palsy
- Trochlear nerve palsy
- Acute trochlear nerve palsy
- 4th nerve palsy
- Abducens nerve finding
- Trochlear nerve finding
- Chronic trochlear nerve palsy with spread of comitance
- Sixth cranial nerve finding
Frequently Asked Questions
What is the ICD-10 code for fourth [trochlear] nerve palsy, unspecified eye?
The ICD-10-CM code for fourth [trochlear] nerve palsy, unspecified eye is H49.10. The full clinical description is "Fourth [trochlear] nerve palsy, unspecified eye". H49.10 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code H49.10 mean?
ICD-10-CM code H49.10 represents “Fourth [trochlear] nerve palsy, unspecified eye”. It is classified under Chapter 7: Diseases of the Eye and Adnexa and is a billable/specific code that can be used on a claim.
Is H49.10 a billable code?
Yes, H49.10 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is H49.10 in?
H49.10 is in Chapter 7: Diseases of the Eye and Adnexa (codes H00-H59).
What SNOMED CT codes does H49.10 map to?
H49.10 maps to 12 SNOMED CT concepts: 20610004, 106156009, 13028004, 1208908003, 1208901009, and 7 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for H49.10?
H49.10 is linked to 1 UMLS Concept Unique Identifier: C2881284. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does H49.10 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like fourth [trochlear] nerve palsy, unspecified eye affect a person's functioning: body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of H49.10?
There is no direct ICD-11 mapping available for H49.10 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.