2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. The code is exempt from POA reporting. Coders also document this condition as ablepharon. 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 the other POA exempt codes in Congenital malformations of eye, ear, face and neck (Q10-Q18).

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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q10.4: its own notes plus those printed at Q10, block Q10-Q18, and Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Congenital absence of punctum lacrimale

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Q10 Congenital malformations of eyelid, lacrimal apparatus and orbit applies to 8 codes
  • cryptophthalmos NOS (Q11.2)
  • cryptophthalmos syndrome (Q87.0)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block Q10-Q18 Congenital malformations of eye, ear, face and neck applies to 62 codes
  • cleft lip and cleft palate (Q35-Q37)
  • congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4)
  • congenital malformation of larynx (Q31.-)
  • congenital malformation of lip NEC (Q38.0)
  • congenital malformation of nose (Q30.-)
  • congenital malformation of parathyroid gland (Q89.2)
  • congenital malformation of thyroid gland (Q89.2)
From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • Codes from this chapter are not for use on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Q10.4, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming Q10.4: they are not reported together with it, unless the two conditions are unrelated.

  • H04 Disorders of lacrimal system
    congenital malformations of lacrimal system (Q10.4-Q10.6)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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

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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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Q10.4Overview

What is the ICD-10 code for absence and agenesis of lacrimal apparatus?

The ICD-10-CM code for absence and agenesis of lacrimal apparatus is Q10.4 (sometimes written as Q104). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

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 125, 124, with relative weights from 0.7699 to 1.2470 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. The code appears in the Congenital malformations of eye, ear, face and neck (Q10-Q18) range of the CMS exempt list.

Can Q10.4 be reported with Q11.2?

Not as a rule. The Excludes1 note at Q10, which applies to Q10.4, lists "cryptophthalmos NOS (Q11.2)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).