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Code
Description

ICD-10-CM Code Q18.1
Preauricular sinus and cyst

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
POA Exempt
POA Exempt Code
The Center for Medicare & Medicaid Services (CMS) requires medical coders to indicate whether or not a condition was present at the time of admission, in order to properly assign MS-DRG codes. This "Present On Admission" (POA) indicator is recorded on CMS form 4010A.
| ICD-10 from 2011 - 2016

Q18.1 is a billable ICD code used to specify a diagnosis of preauricular sinus and cyst. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

POA Indicators on CMS form 4010A are as follows:

IndicatorMeaningCMS Will Pay CC/MCC DRG Costs
YDiagnosis was present at time of inpatient admissionYes
NDiagnosis was not present at time of inpatient admissionNo
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.No
WClinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.Yes
1Exempt from POA reportingNo


The ICD code Q181 is used to code Preauricular sinus and cyst

A preauricular sinus (also known as a congenital auricular fistula, a congenital preauricular fistula, an ear pit,:782 or a preauricular cyst) is a common congenital malformation characterized by a nodule, dent or dimple located anywhere adjacent to the external ear. Frequency of preauricular sinus differs depending on race, 0.1-9% in the US, 0.9% in the UK, and 4-10% in Asia and parts of Africa. Frequency is known to be higher in African Americans and Asians compared to caucasians.

Specialty: Medical Genetics
ICD 9 Code: 744.4

Preauricular sinus on right ear

Coding Notes for Q18.1 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Fistula of auricle, congenital
Cervicoaural fistula

MS-DRG Mapping

  • DRG Group #154-156 - Other ear, nose, mouth and throat diagnoses with MCC.
  • DRG Group #154-156 - Other ear, nose, mouth and throat diagnoses with CC.
  • DRG Group #154-156 - Other ear, nose, mouth and throat diagnoses without CC or MCC.

Related Concepts SNOMET-CT

  • Preauricular cyst (disorder)

ICD-10-CM Alphabetical Index References for 'Q18.1 - Preauricular sinus and cyst'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Q18.1. Click on any term below to browse the alphabetical index.

Equivalent ICD-9 Codes GENERAL EQUIVALENCE MAPPINGS (GEM)

Preauricular sinus or fistula (approximate match)
Preauricular cyst (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code Q18.1 and a single ICD9 code, 744.47 is an approximate match for comparison and conversion purposes.


Parent Code: Q18 - Other congenital malformations of face and neck

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/Q181