Congenital malformations of eyelid, lacrimal apparatus and orbit (Q10) ICD-10-CM
The Q10 code range covers congenital malformations of eyelid, lacrimal apparatus and orbit with 9 ICD-10-CM diagnosis codes. 8 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the Q10 Range 9 codes · 8 billable
- Q10 Congenital malformations of eyelid, lacrimal apparatus and orbitNon-billable
- Q10.0 Congenital ptosis
- Q10.1 Congenital ectropion
- Q10.2 Congenital entropion
- Q10.3 Other congenital malformations of eyelid
- Q10.4 Absence and agenesis of lacrimal apparatus
- Q10.5 Congenital stenosis and stricture of lacrimal duct
- Q10.6 Other congenital malformations of lacrimal apparatus
- Q10.7 Congenital malformation of orbit
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the Q10 range.
Hypertelorism
Abnormal increase in the interorbital distance due to overdevelopment of the lesser wings of the sphenoid.
Hypohidrosis
Abnormally diminished or absent perspiration. Both generalized and segmented (reduced or absent sweating in circumscribed locations) forms of the disease are usually associated with other underlying conditions.
Xerostomia
Decreased salivary flow.
About the Q10 Code Range
The Q10 ICD-10 codes classify congenital malformations affecting the eyelid, lacrimal apparatus, and orbit. These codes are essential for diagnosing and documenting structural abnormalities present from birth in these eye and orbit-related areas.
The ICD-10 code for congenital ptosis (Q10.0) covers drooping of the upper eyelid at birth, known also by terms such as "congenital myogenic ptosis" or "blepharoptosis." Q10.1 captures congenital ectropion, involving eyelid turning outward, and Q10.2 refers to congenital entropion, where the eyelid turns inward. Q10.3 includes other congenital eyelid defects like distichiasis (extra eyelashes) or ankyloblepharon (eyelid fusion). Q10.4 and Q10.5 address congenital absence or blockage of the lacrimal (tear) drainage system, respectively. The Q10.6 category involves other congenital lacrimal apparatus malformations, such as lacrimal fistulas or punctum abnormalities. Finally, Q10.7 identifies congenital deformities of the orbit including bony and soft tissue abnormalities and associated vascular issues. These codes enable precise classification of specific rare conditions like "congenital superior sulcus anomaly of orbit" or "congenital nasolacrimal duct obstruction."
Questions About This Page
How many billable codes are in the Q10 range?
Of the 9 codes in this range, 8 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the Q10 range classify?
The range classifies congenital malformations of eyelid, lacrimal apparatus and orbit. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
