2021 ICD-10-CM Code Q66.70

Congenital pes cavus, unspecified foot

Version 2021
Billable Code
Unspecified Code
MS-DRG Mapping
POA Exempt

Valid for Submission

Q66.70 is a billable diagnosis code used to specify a medical diagnosis of congenital pes cavus, unspecified foot. The code Q66.70 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code Q66.70 might also be used to specify conditions or terms like cerebellar ataxia, areflexia, pes cavus, optic atrophy, sensorineural hearing loss syndrome, congenital pes cavus, congenital pes cavus, hypertelorism, talipes calcaneocavus , talipes calcaneus, etc. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

Unspecified diagnosis codes like Q66.70 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

ICD-10:Q66.70
Short Description:Congenital pes cavus, unspecified foot
Long Description:Congenital pes cavus, unspecified foot

Code Classification

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Present on Admission (POA)

Q66.70 is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here .

CMS POA Indicator Options and Definitions
POA Indicator CodePOA Reason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Replacement Code

Q6670 replaces the following previously assigned ICD-10 code(s):

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020