2026 ICD-10-CM Diagnosis Code Q10.4Absence and agenesis of lacrimal apparatus

ICD-10-CM Codes›Q00-Q99›Q10-Q18›Q10

ICD-10-CM Q10.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q10.4 is a billable ICD-10-CM diagnosis code for absence and agenesis of lacrimal apparatus. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 124 through 125. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Congenital malformations of eye, ear, face, neck.

Code Identity

ICD-10-CM Code
Q10.4
Billable Status
Yes — Valid for Submission
Code Describes
Absence and agenesis of lacrimal apparatus
Short Description
Absence and agenesis of lacrimal apparatus
Same as the full description in the CMS dataset.
Parent Code
Q10
Congenital malformations of eyelid, lacrimal apparatus and orbit

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ10-Q18Congenital malformations of eye, ear, face and neck
CategoryQ10Congenital malformations of eyelid, lacrimal apparatus and orbit
This CodeQ10.4Absence and agenesis of lacrimal apparatus

Present on Admission (POA)Billing

Q10.4 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Ablepharon
  • Agenesis of nasolacrimal duct
  • Agenesis of punctum lacrimale
  • Congenital absence of lacrimal drainage structure
  • Congenital aplasia of lacrimal structure
  • Congenital complete absence of nasolacrimal drainage system
  • Dysgenesis of lacrimal punctum
  • Lower lacrimal punctum finding
  • Partial ablepharon
  • Ptosis, upper ocular movement limitation, absence of lacrimal punctum syndrome

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Congenital absence of punctum lacrimale

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Absence(of) (organ or part) (complete or partial)
      • canaliculus lacrimalis, congenital
    • Absence(of) (organ or part) (complete or partial)
      • punctum lacrimale (congenital)
    • Agenesis
      • canaliculus lacrimalis
    • Agenesis
      • lacrimal apparatus
    • Agenesis
      • punctum lacrimale
    • Atresia, atretic
      • lacrimal apparatus

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MAL005
Congenital malformations of eye, ear, face, neck
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Birth Defects

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Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Q10.4 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
743.65 Spec lacrimal pass anom
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q10.4Overview

Is Q10.4 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report absence and agenesis of lacrimal apparatus on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does Q10.4 group to?

When absence and agenesis of lacrimal apparatus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 124, 125, with relative weights from 0.7678 to 1.3231 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q10.4 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for absence and agenesis of lacrimal apparatus on inpatient claims.

What is the ICD-9 equivalent of Q10.4?

Under the General Equivalence Mappings, absence and agenesis of lacrimal apparatus converts to ICD-9-CM 743.65 (spec lacrimal pass anom). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.