2026 ICD-10-CM Diagnosis Code Q17.2Microtia

ICD-10-CM Codes›Q00-Q99›Q10-Q18›Q17

ICD-10-CM Q17.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q17.2 is a billable ICD-10-CM diagnosis code for microtia. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 154 through 156. 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
Q17.2
Billable Status
Yes — Valid for Submission
Code Describes
Microtia
Short Description
Microtia
Same as the full description in the CMS dataset.
Parent Code
Q17
Other congenital malformations of ear

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ10-Q18Congenital malformations of eye, ear, face and neck
CategoryQ17Other congenital malformations of ear
This CodeQ17.2Microtia

Present on Admission (POA)Billing

Q17.2 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
  • Atresia of nasolacrimal duct
  • Bilateral congenital malformation of external ears
  • Bilateral microphthalmos
  • Bilateral microtia with deafness and cleft palate syndrome
  • Brachymesophalangia
  • Complete deafness
  • Congenital deafness
  • Congenital deafness with labyrinthine aplasia, microtia and microdontia
  • Congenital hypoplasia of auricular cartilage
  • Congenital hypoplasia of helix of ear
  • Congenital malformation of helix
  • Cryptomicrotia brachydactyly syndrome
  • Ear, patella, short stature syndrome
  • Hypertelorism
  • Hypertelorism with microtia and facial clefting syndrome
  • Microdontia
  • Microphthalmia, microtia, fetal akinesia syndrome
  • Microphthalmos of left eye
  • Microphthalmos of right eye
  • Microtia
  • Microtia, eye coloboma, imperforation of nasolacrimal duct syndrome

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.

    • Hypoplasia, hypoplastic
      • ear (auricle) (lobe)
    • Malformation(congenital)
      • ear
        • external
          • microtia
    • Microtia(congenital) (external ear)

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

  • Hypertelorism

    abnormal increase in the interorbital distance due to overdevelopment of the lesser wings of the sphenoid.

  • 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.

Patient EducationClinical

Craniofacial Abnormalities

Craniofacial is a medical term that relates to the bones of the skull and face. Craniofacial abnormalities are birth defects of the face or head. Some, like cleft lip and palate, are among the most common of all birth defects. Others are very rare. Most of them affect how a person's face or head looks.

Read the full article at MedlinePlus

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

Convert Q17.2 to ICD-9-CMHistory

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

ICD-9-CM
744.23 Microtia
Exact Match The mapping is direct, with no qualifiers.

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 Q17.2Overview

Is Q17.2 (Other congenital malformations of ear) a billable code?

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

What MS-DRG does Q17.2 group to?

When microtia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 154, 155, 156, with relative weights from 0.6911 to 1.5635 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q17.2 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 microtia on inpatient claims.

What is the ICD-9 equivalent of Q17.2?

Under the General Equivalence Mappings, microtia converts to ICD-9-CM 744.23 (microtia). The mapping is a direct match.

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.