ICD-10-CM 2027
ICD-10 code for canaliculus lacrimalis agenesis
From the official ICD-10-CM alphabetic index entry “Agenesis › canaliculus lacrimalis”. Page updated September 29, 2026.
About coding canaliculus lacrimalis agenesis
The ICD-10-CM code for canaliculus lacrimalis agenesis is Q10.4 (Absence and agenesis of lacrimal apparatus).
Within Q10 (congenital malformations of eyelid, lacrimal apparatus and orbit), Q10.4 is specifically for absence and agenesis of lacrimal apparatus. Related codes cover congenital ptosis (Q10.0), congenital ectropion (Q10.1), congenital entropion (Q10.2), other congenital malformations of eyelid (Q10.3), congenital stenosis and stricture of lacrimal duct (Q10.5), other congenital malformations of lacrimal apparatus (Q10.6) and congenital malformation of orbit (Q10.7).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about canaliculus lacrimalis agenesis ICD-10 codes
What is the ICD-10 code for canaliculus lacrimalis agenesis?
- Q10.4 — Absence and agenesis of lacrimal apparatus.
Is Q10.4 billable?
- Yes. Q10.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q10.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q10.4 as a principal diagnosis.
Is Q10.4 a CC or MCC?
- No. Q10.4 is neither a CC nor an MCC under MS-DRG v44.0.