Crystal's MCW Coder HubDEFINITION of enophthalmos
Enophthalmos is a posterior displacement of the eyeball within the orbit in an antero-posterior plane. It is due to either enlargement of the bony orbit and/or reduction of the orbital content in relation to each other. This condition produces the clinical appearance of a sunken eye and may result from an absolute reduction of orbital tissue, a relative reduction of tissue, or enlargement of the orbital cavity. The globe itself is typically normal in enophthalmos
ETYMOLOGY of enophthalmos
RELATED TERMS
Term Relationship Exophthalmos Opposite condition (anterior displacement/protrusion of the eye) Orbital blowout fracture Common cause of traumatic enophthalmos Horner’s syndrome Can cause apparent enophthalmos due to ptosis Phthisis bulbi Shrunken, non-functional eye that can cause enophthalmos Silent sinus syndrome Can cause spontaneous enophthalmos Marfan syndrome Associated congenital cause Duane’s syndrome Associated congenital cause Orbital atrophy Cause of enophthalmos due to tissue loss CLINICAL NOTES
- Specialty: Ophthalmology, Oculoplastics, Oral & Maxillofacial Surgery
- ICD-9-CM (Historical): 376.50
- MeSH: D015841
- Diagnosis: Clinical examination, CT/MRI imaging for orbital volume assessment
- Treatment: Depends on etiology; may include orbital floor repair, orbital implants, or fat grafting for significant cases
ICD-10 CODES (2026)
Parent Code (Non-Billable):
- H05.4 - enophthalmos
Specific Billable Codes (7 characters):
Code Description H05.401 Unspecified enophthalmos, right eye H05.402 Unspecified enophthalmos, left eye H05.403 Unspecified enophthalmos, bilateral H05.409 Unspecified enophthalmos, unspecified eye H05.411 enophthalmos due to atrophy of orbital tissue, right eye H05.412 Enophthalmos due to atrophy of orbital tissue, left eye H05.413 Enophthalmos due to atrophy of orbital tissue, bilateral H05.419 Enophthalmos due to atrophy of orbital tissue, unspecified eye H05.421 Enophthalmos due to trauma or surgery, right eye H05.422 Enophthalmos due to trauma or surgery, left eye H05.423 Enophthalmos due to trauma or surgery, bilateral H05.429 Enophthalmos due to trauma or surgery, unspecified eye Note: H05.4 is a non-billable code and requires more specific child codes for reimbursement purposes
CPT CODES (Related Procedures)
Code Procedure Description 21385 Open treatment of orbital floor fracture; transantral approach (Caldwell-Luc type) 21386 Open treatment of orbital floor fracture; periorbital approach 21387 Open treatment of orbital floor fracture; with bone graft (includes obtaining graft) 21390 Open treatment of orbit fracture, including internal fixation and repair of orbital floor with implant 21395 Open treatment of orbital floor blowout fracture; periorbital approach with bone graft (includes obtaining graft) 21400 Open treatment of orbital fracture, other than floor, without internal fixation 21401 Open treatment of orbital fracture, other than floor, with internal fixation 67400 Orbitotomy, exploration (for orbital exploration/repair) Note: CPT codes 21385-21395 are commonly used for surgical repair of orbital fractures that cause enophthalmos
DERIVATIONS of enophthalmos
TABLE definition AS Definition FROM #medterm WHERE length(filter(roots, (word) => econtains([[]].roots, word))) > 0 AND file.name != [[]].file.name SORT file.name ASC
Query functionality
TABLE definition AS Definition FROM #medterm WHERE length(filter(definition, (word) => econtains([[]].definition, word))) > 0 AND file.name != [[]].file.name
Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms