2026 ICD-10-CM Diagnosis Code Q11.2Microphthalmos

ICD-10-CM Codes›Q00-Q99›Q10-Q18›Q11

ICD-10-CM Q11.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q11.2 is a billable ICD-10-CM diagnosis code for microphthalmos. 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
Q11.2
Billable Status
Yes — Valid for Submission
Code Describes
Microphthalmos
Short Description
Microphthalmos
Same as the full description in the CMS dataset.
Parent Code
Q11
Anophthalmos, microphthalmos and macrophthalmos

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ10-Q18Congenital malformations of eye, ear, face and neck
CategoryQ11Anophthalmos, microphthalmos and macrophthalmos
This CodeQ11.2Microphthalmos

Present on Admission (POA)Billing

Q11.2 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.

  • Akinesia
  • Ankyloblepharon
  • Bilateral cryptophthalmos
  • Bilateral microphthalmos
  • Bilateral microphthalmos with congenital coloboma
  • Bilateral partial cryptophthalmos
  • Central obesity
  • Colobomatous microphthalmia
  • Colobomatous microphthalmia, obesity, hypogenitalism, intellectual disability syndrome
  • Colobomatous microphthalmia, rhizomelic dysplasia syndrome
  • COMMAD syndrome
  • Complete cryptophthalmos
  • Complete deafness
  • Congenital ankyloblepharon
  • Congenital aphakia
  • Congenital aphakia, iris hypoplasia, microphthalmia, microcornea syndrome
  • Congenital blindness
  • Congenital deafness
  • Congenital hypoplasia of nose
  • Congenital prognathism
  • Cryptophthalmos
  • Drusen of optic disc
  • Dysplasia of eye
  • Frontonasal dysplasia sequence
  • Frontonasal dysplasia, severe microphthalmia, severe facial clefting syndrome
  • Hypoplasia of eye
  • Hyposmia, nasal and ocular hypoplasia, hypogonadotropic hypogonadism syndrome
  • Isolated cryptophthalmos
  • Lenz microphthalmia syndrome
  • Macrosomia, microphthalmia, cleft palate syndrome
  • Microphthalmia with ankyloblepharon and intellectual disability syndrome
  • Microphthalmia with brain and digit anomaly
  • Microphthalmia with brain atrophy syndrome
  • Microphthalmia with linear skin defect syndrome
  • Microphthalmia, microtia, fetal akinesia syndrome
  • Microphthalmia, retinitis pigmentosa, foveoschisis, optic disc drusen syndrome
  • Microphthalmic socket
  • Microphthalmos
  • Microphthalmos due to branchio-oculo-facial syndrome
  • Microphthalmos due to Delleman syndrome
  • Microphthalmos due to Fryns syndrome
  • Microphthalmos of left eye
  • Microphthalmos of right eye
  • Microtia
  • MMEP syndrome
  • Nanophthalmia
  • Retinal degeneration, nanophthalmos, glaucoma syndrome
  • Simple microphthalmos
  • Syndromic microphthalmia type 5
  • Syndromic nanophthalmos due to Kenny-Caffey syndrome
  • X-linked colobomatous microphthalmia, microcephaly, intellectual disability, short stature syndrome

Tabular List NotesGuidance

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

Inclusion Terms

  • Cryptophthalmos NOS
  • Dysplasia of eye
  • Hypoplasia of eye
  • Rudimentary eye

Type 1 Excludes

  • cryptophthalmos syndrome Q87.0

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.

    • Cryptophthalmos
    • Dysplasia
      • eye (congenital)
    • Hypoplasia, hypoplastic
      • eye
    • Microphthalmos, microphthalmia(congenital)
    • Rudimentary(congenital)
      • eye

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

Clinical InformationClinical

  • Microphthalmos

    congenital or developmental anomaly in which the eyeballs are abnormally small.

  • Bilateral Microphthalmos|Microphthalmos, Bilateral

    a congenital abnormality characterized by the presence of two abnormally small eye globes.

  • Microphthalmos

    a congenital abnormality characterized by the presence of an abnormally small eye globe.

  • Unilateral Microphthalmos|Microphthalmos, Unilateral

    a congenital abnormality characterized by the presence of one abnormally small eye globe and one normally sized eye globe.

  • Akinesia

    lack of movement.

  • Fetal Akinesia Deformation Sequence|FADS|Pena-Shokeir syndrome, Type 1

    a condition characterized by fetal akinesia and intrauterine growth restriction, that may be associated with mutation(s) in the rapsn or dok7 genes, encoding 43 kda receptor-associated protein of the synapse and protein dok-7, respectively.

  • Congenital Aphakia

    the absence of the lens of the eye that is present at the time of birth.

Patient EducationClinical

Birth Defects

A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.

The full article covers:

  • What are birth defects?
  • What causes birth defects?
  • Who is at risk of having a baby with birth defects?
  • How are birth defects diagnosed?
  • What are the treatments for birth defects?
  • Can birth defects be prevented?

Read the full article at MedlinePlus

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

Convert Q11.2 to ICD-9-CMHistory

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

ICD-9-CM
743.06 Cryptophthalmos
Approximate The match is approximate rather than exact.
ICD-9-CM
743.10 Microphthalmos NOS
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 Q11.2Overview

Is Q11.2 (Anophthalmos, microphthalmos and macrophthalmos) a billable code?

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

What MS-DRG does Q11.2 group to?

When microphthalmos 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 Q11.2 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 microphthalmos on inpatient claims.

What is the ICD-9 equivalent of Q11.2?

Under the General Equivalence Mappings, microphthalmos converts to ICD-9-CM 743.06 (cryptophthalmos) and 743.10 (microphthalmos NOS). 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.