proptosis

DEFINITION of proptosis

Proptosis is a clinical condition characterized by the anterior displacement of the eyeball. It occurs when the volume of orbital contents (such as fat, extraocular muscles, blood, or neoplastic tissue) increases within the fixed bony space of the orbit, pushing the eye forward. It can be unilateral or bilateral and may result from various etiologies including thyroid eye disease (Graves’ ophthalmopathy), orbital tumors, inflammation (orbital cellulitis), vascular abnormalities, or trauma. Severe cases can lead to exposure keratopathy, optic nerve compression, and vision loss.

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ETYMOLOGY of proptosis

greek Derived from the Greek pro- meaning “forward” and ptōsis meaning “a falling” or “drooping” (in this specific context, interpreted as a falling forward or protrusion).

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RELATED TERMS

• Enophthalmos: Posterior displacement of the eyeball (opposite of proptosis).
• Exophthalmometry: The measurement of the degree of eye protrusion.
• Thyroid Eye Disease (Graves’ Ophthalmopathy): A common autoimmune cause of bilateral proptosis.
• Orbital Cellulitis: Infection of the orbit causing inflammation and proptosis.
• Orbital Decompression: Surgical procedure to create more space in the orbit to relieve proptosis.
• Lid Lag / Lid Retention: Often seen concomitantly with thyroid-related proptosis.

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CODING AND NUANCES

ICD-10 Codes Note: These codes are 6 characters; a 7th character is not applicable for this category in the current ICD-10-CM tabular list.

• H05.201: Unspecified proptosis, right eye
• H05.202: Unspecified proptosis, left eye
• H05.203: Unspecified proptosis, bilateral
• H05.209: Unspecified proptosis, unspecified eye
• H05.211: Axial proptosis, right eye
• H05.212: Axial proptosis, left eye
• H05.213: Axial proptosis, bilateral
• H05.219: Axial proptosis, unspecified eye
• H05.221: Eccentric proptosis, right eye
• H05.222: Eccentric proptosis, left eye
• H05.223: Eccentric proptosis, bilateral
• H05.229: Eccentric proptosis, unspecified eye

CPT Codes Note: CPT codes represent procedures/services. The following is the specific diagnostic measurement code for this condition.

• 92340: Determination of proptosis, exophthalmometry, unilateral or bilateral (with or without lateral canthus measurement)
• 67515 - 67550: Orbital surgery codes (e.g., orbital decompression) may apply depending on the surgical treatment required for the underlying cause.

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DERIVATIONS of proptosis

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Query functionality

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Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms