Q17.8 Other specified congenital malformations of ear

The ICD-10-CM code for Other specified congenital malformations of ear is Q17.8 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

17: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Section

Q10-Q18: Congenital malformations of eye, ear, face and neck (Q10-Q18)

Category Q17

9 codes (8 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Q17.8:

• Darwin's tubercle
• Dilatation › eustachian tube, congenital
• Abnormal, abnormality, abnormalities › course, eustachian tube
• Anomaly, anomalous (congenital) (unspecified type) › eustachian tube
• Deformity › eustachian tube (congenital) NEC
• Atresia, atretic › eustachian tube
• Distortion (s) (congenital) › eustachian tube
• Anomaly, anomalous (congenital) (unspecified type) › auditory canal

Inclusion Terms

• Congenital absence of lobe of ear

U.S. Hospital Utilization

• An estimated 1,660 U.S. inpatient stays in 2023 included Q17.8 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

POA indicator for congenital conditions/anomalies and Q00-Q99 exception

Congenital conditions and anomalies Assign “Y” for congenital conditions and anomalies except for categories Q00- Q99, Congenital anomalies, which are on the exempt list. Congenital conditions are always considered present on admission.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference Q17.8 with the canonical source and edition:

Q17.8 — Other specified congenital malformations of ear. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/Q17.8

Canonical URL: https://icd10codingpro.com/codes/Q17.8