ICD-10-CM 2027
ICD-10 code for Lacrimonasal duct supernumerary
From the official ICD-10-CM alphabetic index entry “Supernumerary (congenital) › lacrimonasal duct”. Page updated September 29, 2026.
About coding Lacrimonasal duct supernumerary
The ICD-10-CM code for Lacrimonasal duct supernumerary is Q10.6 (Other congenital malformations of lacrimal apparatus).
Within Q10, choose Q10.6 (Other congenital malformations of lacrimal apparatus) only when documentation doesn't support a more specific option: congenital ptosis (Q10.0), congenital ectropion (Q10.1), congenital entropion (Q10.2), other congenital malformations of eyelid (Q10.3), absence and agenesis of lacrimal apparatus (Q10.4), congenital stenosis and stricture of lacrimal duct (Q10.5) 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 Lacrimonasal duct supernumerary ICD-10 codes
What is the ICD-10 code for Lacrimonasal duct supernumerary?
- Q10.6 — Other congenital malformations of lacrimal apparatus.
Is Q10.6 billable?
- Yes. Q10.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q10.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q10.6 as a principal diagnosis.
Is Q10.6 a CC or MCC?
- No. Q10.6 is neither a CC nor an MCC under MS-DRG v44.0.