ICD-10-CM Code For Congenital Deformities Of Feet: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Q66 includes congenital deformities of the feet such as clubfoot (talipes), positional deformities, and other structural malformations present at birth that affect foot alignment and function. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving congenital foot misalignment, structural abnormalities impacting ambulation, and associated musculoskeletal involvement that may require corrective procedures or orthotic management. Accurate coding within the ICD-10-CM Q66 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM Q66: Congenital Deformities Of Feet Overview

This code group captures congenital malformations of the feet, including structural deformities present at birth such as clubfoot and other positional or structural anomalies. These conditions affect the musculoskeletal system of the lower extremities and can influence gait, function, and need for corrective treatment. Accurate coding matters for appropriate claim processing and reflects clinical severity and necessary services.

When to Use

Assign a code from this group when a congenital foot deformity is diagnosed, documented, and relevant to the encounter or treatment plan. Use these codes to indicate the specific deformity type and laterality when reporting corrective procedures, follow-up care, or ongoing management.

ICD-10-CM Codes

32 rows

ICD-10-CM Code	Description
Q66.00	Congenital talipes equinovarus, unspecified foot
Q66.01	Congenital talipes equinovarus, right foot
Q66.02	Congenital talipes equinovarus, left foot
Q66.10	Congenital talipes calcaneovarus, unspecified foot
Q66.11	Congenital talipes calcaneovarus, right foot
Q66.12	Congenital talipes calcaneovarus, left foot
Q66.211	Congenital metatarsus primus varus, right foot
Q66.212	Congenital metatarsus primus varus, left foot
Q66.219	Congenital metatarsus primus varus, unspecified foot
Q66.221	Congenital metatarsus adductus, right foot
Q66.222	Congenital metatarsus adductus, left foot
Q66.229	Congenital metatarsus adductus, unspecified foot
Q66.30	Other congenital varus deformities of feet, unspecified foot
Q66.31	Other congenital varus deformities of feet, right foot
Q66.32	Other congenital varus deformities of feet, left foot
Q66.40	Congenital talipes calcaneovalgus, unspecified foot
Q66.41	Congenital talipes calcaneovalgus, right foot
Q66.42	Congenital talipes calcaneovalgus, left foot
Q66.50	Congenital pes planus, unspecified foot
Q66.51	Congenital pes planus, right foot

Showing 1–20 of 32

DRG Codes

4 rows

DRG Code	Description
564	Other Musculoskeletal System and Connective Tissue Diagnoses with MCC
565	Other Musculoskeletal System and Connective Tissue Diagnoses with CC
566	Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC
795	Normal Newborn

Typical Clinical Scenarios

A newborn is evaluated in the nursery after delivery with forefoot adduction and rigid inversion of the foot noted on physical exam, limited passive correction, and asymmetric creases. The infant is referred to pediatric orthopedics for serial casting and monitoring; a congenital foot deformity diagnosis is assigned to guide early treatment and documentation. Typical codes: Q66.00, Q66.01
A 6-year-old child with a history of untreated talipes equinovarus presents with chronic gait abnormality, callus formation, and difficulty wearing shoes; the family seeks orthopedic assessment for corrective surgery. Because this is a persistent congenital foot malformation causing functional impairment, a congenital deformity code is used to describe the underlying condition and plan operative repair. Typical codes: Q66.20, Q66.21, Q66.22
An adult with a known congenital vertical talus presents with new skin breakdown and ulceration over a prominent bony prominence after recent ulceration-related infection requiring admission; the congenital foot anomaly is documented as a comorbidity affecting wound healing and surgical planning. Typical codes: Q66.30, Q66.31

Related Codes

Q65-CONGENITAL-DEFORMITIES-OF-HIP

ICD-10-CM Code For Congenital Deformities Of Hip: Group Overview

Q67-CONGENITAL-MUSCULOSKELETAL-DEFORMITIES-HEAD-FACE-SPINE-CHEST

ICD-10-CM Code For Congenital Musculoskeletal Deformities Of Head Face Spine And Chest: Group Overview

Q68-OTHER-CONGENITAL-MUSCULOSKELETAL-DEFORMITIES

ICD-10-CM Code For Other Congenital Musculoskeletal Deformities: Group Overview

Q69-POLYDACTYLY

ICD-10-CM Code For Polydactyly: Group Overview

Q70-SYNDACTYLY-CONGENITAL-DIGIT-FUSION

ICD-10-CM Code For Syndactyly: Group Overview

Q71-REDUCTION-DEFECTS-OF-UPPER-LIMB

ICD-10-CM Code For Reduction Defects Of Upper Limb: Group Overview

Q72-REDUCTION-DEFECTS-OF-LOWER-LIMB

ICD-10-CM Code For Reduction Defects Of Lower Limb: Group Overview

Q73-REDUCTION-DEFECTS-OF-UNSPECIFIED-LIMB

ICD-10-CM Code For Reduction Defects Of Unspecified Limb: Group Overview

Q74-OTHER-CONGENITAL-MALFORMATIONS-OF-LIMBS

ICD-10-CM Code For Other Congenital Malformations Of Limb(S): Group Overview

Q75-OTHER-CONGENITAL-SKULL-FACE-MALFORMATIONS

ICD-10-CM Code For Other Congenital Malformations Of Skull And Face Bones: Group Overview

Showing 1–10 of 14

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

32 rows

ICD-10-CM Code	Description
Q66.00	Congenital talipes equinovarus, unspecified foot
Q66.01	Congenital talipes equinovarus, right foot
Q66.02	Congenital talipes equinovarus, left foot
Q66.10	Congenital talipes calcaneovarus, unspecified foot
Q66.11	Congenital talipes calcaneovarus, right foot
Q66.12	Congenital talipes calcaneovarus, left foot
Q66.211	Congenital metatarsus primus varus, right foot
Q66.212	Congenital metatarsus primus varus, left foot
Q66.219	Congenital metatarsus primus varus, unspecified foot
Q66.221	Congenital metatarsus adductus, right foot
Q66.222	Congenital metatarsus adductus, left foot
Q66.229	Congenital metatarsus adductus, unspecified foot
Q66.30	Other congenital varus deformities of feet, unspecified foot
Q66.31	Other congenital varus deformities of feet, right foot
Q66.32	Other congenital varus deformities of feet, left foot
Q66.40	Congenital talipes calcaneovalgus, unspecified foot
Q66.41	Congenital talipes calcaneovalgus, right foot
Q66.42	Congenital talipes calcaneovalgus, left foot
Q66.50	Congenital pes planus, unspecified foot
Q66.51	Congenital pes planus, right foot

Showing 1–20 of 32

DRG Codes

4 rows

DRG Code	Description
564	Other Musculoskeletal System and Connective Tissue Diagnoses with MCC
565	Other Musculoskeletal System and Connective Tissue Diagnoses with CC
566	Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC
795	Normal Newborn

Typical Clinical Scenarios

A newborn is evaluated in the nursery after delivery with forefoot adduction and rigid inversion of the foot noted on physical exam, limited passive correction, and asymmetric creases. The infant is referred to pediatric orthopedics for serial casting and monitoring; a congenital foot deformity diagnosis is assigned to guide early treatment and documentation. Typical codes: Q66.00, Q66.01
A 6-year-old child with a history of untreated talipes equinovarus presents with chronic gait abnormality, callus formation, and difficulty wearing shoes; the family seeks orthopedic assessment for corrective surgery. Because this is a persistent congenital foot malformation causing functional impairment, a congenital deformity code is used to describe the underlying condition and plan operative repair. Typical codes: Q66.20, Q66.21, Q66.22
An adult with a known congenital vertical talus presents with new skin breakdown and ulceration over a prominent bony prominence after recent ulceration-related infection requiring admission; the congenital foot anomaly is documented as a comorbidity affecting wound healing and surgical planning. Typical codes: Q66.30, Q66.31

Related Codes

Q65-CONGENITAL-DEFORMITIES-OF-HIP

ICD-10-CM Code For Congenital Deformities Of Hip: Group Overview

Q67-CONGENITAL-MUSCULOSKELETAL-DEFORMITIES-HEAD-FACE-SPINE-CHEST

ICD-10-CM Code For Congenital Musculoskeletal Deformities Of Head Face Spine And Chest: Group Overview

Q68-OTHER-CONGENITAL-MUSCULOSKELETAL-DEFORMITIES

ICD-10-CM Code For Other Congenital Musculoskeletal Deformities: Group Overview

Q69-POLYDACTYLY

ICD-10-CM Code For Polydactyly: Group Overview

Q70-SYNDACTYLY-CONGENITAL-DIGIT-FUSION

ICD-10-CM Code For Syndactyly: Group Overview

Q71-REDUCTION-DEFECTS-OF-UPPER-LIMB

ICD-10-CM Code For Reduction Defects Of Upper Limb: Group Overview

Q72-REDUCTION-DEFECTS-OF-LOWER-LIMB

ICD-10-CM Code For Reduction Defects Of Lower Limb: Group Overview

Q73-REDUCTION-DEFECTS-OF-UNSPECIFIED-LIMB

ICD-10-CM Code For Reduction Defects Of Unspecified Limb: Group Overview

Q74-OTHER-CONGENITAL-MALFORMATIONS-OF-LIMBS

ICD-10-CM Code For Other Congenital Malformations Of Limb(S): Group Overview

Q75-OTHER-CONGENITAL-SKULL-FACE-MALFORMATIONS

ICD-10-CM Code For Other Congenital Malformations Of Skull And Face Bones: Group Overview

Showing 1–10 of 14

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Congenital Deformities Of Feet: Group Overview

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ICD-10-CM Q66: Congenital Deformities Of Feet Overview

ICD-10-CM Code For Congenital Deformities Of Feet: Group Overview

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ICD-10-CM Q66: Congenital Deformities Of Feet Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which conditions are included in ICD-10-CM code group Q66?

How are laterality and specificity represented in codes within Q66?

Which ICD-10-CM codes correspond to congenital talipes equinovarus (clubfoot)?

What related DRG groupings may apply when coding Q66 diagnoses for inpatient claims?

Why is accurate coding within the Q66 group important for billing and clinical documentation?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which conditions are included in ICD-10-CM code group Q66?

How are laterality and specificity represented in codes within Q66?

Which ICD-10-CM codes correspond to congenital talipes equinovarus (clubfoot)?

What related DRG groupings may apply when coding Q66 diagnoses for inpatient claims?

Why is accurate coding within the Q66 group important for billing and clinical documentation?

References