378 Strabismus and other disorders of binocular eye movements (378.00-378.9) ICD-9-CM
The 378.00-378.9 block classified 378 strabismus and other disorders of binocular eye movements with 57 legacy diagnosis codes. None remain valid for claim submission; each code below links to its reference page with the official ICD-10-CM replacement under the CMS General Equivalence Mappings.
Retired Code Set
ICD-9-CM stopped being valid for U.S. claims with dates of service on or after October 1, 2015, when ICD-10-CM replaced it. Use this index for historical lookups and crosswalking; for current coding, start from the ICD-10-CM codes list or the ICD-9 / ICD-10 converter.
Legacy Codes in the 378.00-378.9 Block 57 codes
None of these codes remain valid for claim submission. Each code page shows its ICD-10-CM replacement under the CMS General Equivalence Mappings.
- 378.00 Esotropia NOS
- 378.01 Monocular esotropia
- 378.02 Monoc esotrop w a pattrn
- 378.03 Monoc esotrop w v pattrn
- 378.04 Monoc esotrop w x/y pat
- 378.05 Alternating esotropia
- 378.06 Alt esotropia w a pattrn
- 378.07 Alt esotropia w v pattrn
- 378.08 Alt esotrop w x/y pattrn
- 378.10 Exotropia NOS
- 378.11 Monocular exotropia
- 378.12 Monoc exotrop w a pattrn
- 378.13 Monoc exotrop w v pattrn
- 378.14 Monoc exotrop w x/y pat
- 378.15 Alternating exotropia
- 378.16 Alt exotropia w a pattrn
- 378.17 Alt exotropia w v pattrn
- 378.18 Alt exotrop w x/y pattrn
- 378.20 Intermit heterotrop NOS
- 378.21 Intermit monoc esotropia
- 378.22 Intermit altrn esotropia
- 378.23 Intermit monoc exotropia
- 378.24 Intermit altrn exotropia
- 378.30 Heterotropia NOS
- 378.31 Hypertropia
- 378.32 Hypotropia
- 378.33 Cyclotropia
- 378.34 Monofixation syndrome
- 378.35 Accommodative esotropia
- 378.40 Heterophoria NOS
- 378.41 Esophoria
- 378.42 Exophoria
- 378.43 Vertical heterophoria
- 378.44 Cyclophoria
- 378.45 Alternating hyperphoria
- 378.50 Paralytic strabismus NOS
- 378.51 Partial third nerv palsy
- 378.52 Total third nerve palsy
- 378.53 Fourth nerve palsy
- 378.54 Sixth nerve palsy
- 378.55 External ophthalmoplegia
- 378.56 Total ophthalmoplegia
- 378.60 Mechanical strabism NOS
- 378.61 Brown's sheath syndrome
- 378.62 Mech strab d/t muscl dis
- 378.63 Mech strab w oth conditn
- 378.71 Duane's syndrome
- 378.72 Prog ext ophthalmoplegia
- 378.73 Neuromuscle dis strabism
- 378.81 Palsy of conjugate gaze
- 378.82 Spasm of conjugate gaze
- 378.83 Convergenc insufficiency
- 378.84 Convergence excess
- 378.85 Anomalies of divergence
- 378.86 Internucl ophthalmopleg
- 378.87 Skew deviation, eye
- 378.9 Eye movemnt disorder NOS
Questions About This Page
Are the 378.00-378.9 codes still billable?
No. Every code in this block became invalid for U.S. claims after September 30, 2015. Each code page linked above shows the ICD-10-CM replacement CMS assigned in the General Equivalence Mappings, and the ICD-9 / ICD-10 converter translates any of them directly.
What did the 378.00-378.9 block classify?
The block classified 378 strabismus and other disorders of binocular eye movements with 57 codes in the final ICD-9-CM release. It sat under Diseases of the sense organs (360–389) in the legacy hierarchy.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
