ICD-10-CM 2027 diagnosis code
Q17.5Prominent ear
Q17.5 is a valid, billable ICD-10-CM code for prominent ear. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Looking up by condition? See ICD-10 code for Bat ear.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Q17.5
Q17.5 is the ICD-10-CM diagnosis code for prominent ear. It belongs to category Q17 (other congenital malformations of ear), block Q10-Q18 (congenital malformations of eye, ear, face and neck) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within Q17 (other congenital malformations of ear), Q17.5 is specifically for prominent ear. Related codes cover accessory auricle (Q17.0), Macrotia (Q17.1), Microtia (Q17.2), other misshapen ear (Q17.3), Misplaced ear (Q17.4), other specified congenital malformations of ear (Q17.8) and congenital malformation of ear, unspecified (Q17.9).
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 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC, relative weight 1.5921), DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC, relative weight 0.9322) and DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC, relative weight 0.6659), in MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 744.29 (other specified anomalies of ear).
Coding notes
- Bat ear
Notes that apply from higher levels
Instructions written at a parent level also apply to Q17.5.
Broader instructions also apply from Q10-Q18 Congenital malformations of eye, ear, face and neck and Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.
Alphabetic index entries
3 entriesTerms in the official ICD-10-CM index that lead to Q17.5.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 03 · Diseases and Disorders of the Ear, Nose, Mouth and Throat
ICD-9-CM equivalent
Converter →- 744.29Other specified anomalies of earapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about Q17.5
Is Q17.5 billable?
- Yes. Q17.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q17.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q17.5 as a principal diagnosis.
Is Q17.5 a CC or MCC?
- No. Q17.5 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does Q17.5 group to?
- Q17.5 is used in the MS-DRG v44.0 logic for MS-DRG 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC), MS-DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC) and MS-DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for Q17.5?
- The CMS General Equivalence Mappings map Q17.5 to ICD-9-CM 744.29.