HCPCS L5972: Lower Extremity Prosthetic Foot, Flexible Keel

HCPCS Level II code L5972 describes an all lower extremity prosthesis component: a foot with a flexible keel intended as a prosthetic foot replacement for lower-limb amputees; service type is prosthetic device provision and fitting, and the typical site of service is prosthetics clinic, outpatient prosthetics practice, or orthotics & prosthetics (O&P) facility where the device is evaluated, fitted, and delivered to the patient.

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HCPCS L5972: Lower Extremity Prosthetic Foot, Flexible Keel

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Get alerted when payer policies referencing L5972 are released or updated.

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Clinical & Coding Specifications

Clinical Context

A 58-year-old male with a transtibial amputation presents to a prosthetics clinic for fitting of a flexible keel prosthetic foot. The patient ambulates in the community and reports intermittent forefoot pain with rigid feet and desires a lightweight, shock-attenuating foot to improve gait symmetry and reduce stump discomfort. The prosthetist performs a comprehensive evaluation including residual limb inspection, range of motion, strength testing, and gait analysis. Diagnostic components (measurement, casting or digital scan) are completed, followed by ordering the device coded as L5972 (all lower extremity prostheses, foot, flexible keel). The device is fabricated by a certified prosthetic lab and returned for fitting. During the fitting visit the prosthetist verifies alignment, performs dynamic adjustments, and documents functional outcomes (e.g., walking distance, need for assistive device). Follow-up visits address fit issues, skin integrity, component adjustments, and potential upgrades. Typical site of service: outpatient prosthetics clinic or orthotics/prosthetics laboratory; occasional inpatient or skilled nursing facility fittings for post-acute patients. Typical service type: prosthetic device provision and fitting, including evaluation and casting/scanning, delivery, and adjustments.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`97763`	Orthotic/prosthetic management and training, initial encounter, each 15 minutes	Used for prosthetic training sessions after fitting `L5972` to document gait training and functional use
`97760`	Orthotic/prosthetic management and training, initial encounter, without training, each 15 minutes	Used for device management visits focused on assessment and minor adjustments without formal training
`99203`	Office or other outpatient visit for the evaluation and management of a new patient, moderate complexity	Used when the prosthetist or physician documents a new patient evaluation leading to provision of `L5972` (note: actual E/M billing depends on provider credentials and payer rules)
`11721`	Debridement, nail, simple; 1st nail	Occasionally used pre-provision if nail care or local skin procedures are performed during a prosthetic fitting visit (billing depends on provider scope)
`99070`	Supplies and materials (except spectacles), provided by the physician over and above those usually included with the office visit	Used to bill noncovered supplies or ancillary items related to fitting when allowed by payer

Related Modifiers

5 rows

Modifier	Description	When to Use
52	Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…	- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
59	Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…	- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
78	CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…	- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
80	CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…	- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
33	Modifier 33 was created by the American Medical Association in response to the Affordable Care Act to identify services provided for preventive intent. It is appended to CPT/HCPCS codes that could be…	- Use modifier -33 when a CPT/HCPCS service that can be billed as either preventive or diagnostic/treatment is provided with preventive intent and aligns with USPSTF A or B recommendations or other…

Related Provider Taxonomies

8 rows

Taxonomy Code	Specialty	Notes
208000000X	Pediatrics Physician	A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
207R00000X	Internal Medicine Physician	A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults…
333600000X	Pharmacy	A facility used by pharmacists for the compounding and dispensing of medicinal preparations and other associated professional and administrative servi…
171400000X	Health & Wellness Coach	The Health & Wellness Coach is trained in motivational theories, strategies, and communication techniques, which are used to assist patients to develo…
175L00000X	Homeopath	A provider who is educated and trained in a system of therapeutics in which diseases are treated by drugs which are capable of producing in healthy pe…
364SH1100X	Holistic Clinical Nurse Specialist	Physician Assistants & Advanced Practice Nursing Providers · Clinical Nurse Specialist
237700000X	Hearing Instrument Specialist	Individuals who test hearing for the selection, adaptation, fitting, adjusting, servicing, and sale of hearing aids. Hearing Instrument Specialist is …
156FX1101X	Ophthalmic Assistant	An ophthalmic assistant assists ophthalmologists by performing duties including, but not limited to, patient charting, patient education, and basic ey…

HCPCS Level II L5000: Partial Foot Shoe Insert with Longitudinal Arch, Toe Filler

HCPCS-L5010-PARTIAL-FOOT-MOLDED-SOCKET-ANKLE-HEIGHT-TOE-FILLER

HCPCS L5010: Partial Foot Molded Socket, Ankle Height, With Toe Filler

HCPCS-L5020-PARTIAL-FOOT-MOLDED-SOCKET-TIBIAL-TUBERCLE-TOE-FILLER

HCPCS L5020: Partial Foot Molded Socket with Toe Filler

HCPCS-L5050-ANKLE-SYMES-MOLDED-SOCKET-SACH-FOOT

HCPCS L5050: Ankle/Symes Molded Socket with SACH Foot

HCPCS-L5060-ANKLE-SYMES-METAL-FRAME-MOLDED-LEATHER-SOCKET-ARTICULATED-ANKLE-FOOT

HCPCS L5060: Ankle/Symes Metal Frame with Molded Leather Socket

HCPCS-L5100-BELOW-KNEE-MOLDED-SOCKET-SHIN-SACH-FOOT

HCPCS Level II L5100: Below-Knee Molded Socket with Shin and SACH Foot

HCPCS-L5105-BELOW-KNEE-PLASTIC-SOCKET-SACH-FOOT

HCPCS L5105: Below-Knee Plastic Socket Prosthesis with SACH Foot

HCPCS-L5150-KNEE-DISARTICULATION-MOLDED-SOCKET-EXTERNAL-KNEE-SACH-FOOT

HCPCS L5150: Knee Disarticulation Molded Socket with External Knee and SACH Foot

HCPCS-L5160-KNEE-DISARTICULATION-MOLDED-SOCKET-BENT-KNEE-SACH-FOOT

HCPCS Level II L5160: Knee Disarticulation Molded Socket, Bent Knee Configuration

HCPCS-L5200-ABOVE-KNEE-MOLDED-SOCKET-SINGLE-AXIS-KNEE-SACH-FOOT

HCPCS Level II L5200: Above-knee Prosthesis with Molded Socket and Single-axis Knee

Showing 1–10 of 472

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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Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

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Clinical & Coding Specifications

Clinical Context

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`97763`	Orthotic/prosthetic management and training, initial encounter, each 15 minutes	Used for prosthetic training sessions after fitting `L5972` to document gait training and functional use
`97760`	Orthotic/prosthetic management and training, initial encounter, without training, each 15 minutes	Used for device management visits focused on assessment and minor adjustments without formal training
`99203`	Office or other outpatient visit for the evaluation and management of a new patient, moderate complexity	Used when the prosthetist or physician documents a new patient evaluation leading to provision of `L5972` (note: actual E/M billing depends on provider credentials and payer rules)
`11721`	Debridement, nail, simple; 1st nail	Occasionally used pre-provision if nail care or local skin procedures are performed during a prosthetic fitting visit (billing depends on provider scope)
`99070`	Supplies and materials (except spectacles), provided by the physician over and above those usually included with the office visit	Used to bill noncovered supplies or ancillary items related to fitting when allowed by payer

Related Modifiers

5 rows

Modifier	Description	When to Use
52	Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…	- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
59	Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…	- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
78	CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…	- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
80	CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…	- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
33	Modifier 33 was created by the American Medical Association in response to the Affordable Care Act to identify services provided for preventive intent. It is appended to CPT/HCPCS codes that could be…	- Use modifier -33 when a CPT/HCPCS service that can be billed as either preventive or diagnostic/treatment is provided with preventive intent and aligns with USPSTF A or B recommendations or other…

Related Provider Taxonomies

8 rows

Taxonomy Code	Specialty	Notes
208000000X	Pediatrics Physician	A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
207R00000X	Internal Medicine Physician	A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults…
333600000X	Pharmacy	A facility used by pharmacists for the compounding and dispensing of medicinal preparations and other associated professional and administrative servi…
171400000X	Health & Wellness Coach	The Health & Wellness Coach is trained in motivational theories, strategies, and communication techniques, which are used to assist patients to develo…
175L00000X	Homeopath	A provider who is educated and trained in a system of therapeutics in which diseases are treated by drugs which are capable of producing in healthy pe…
364SH1100X	Holistic Clinical Nurse Specialist	Physician Assistants & Advanced Practice Nursing Providers · Clinical Nurse Specialist
237700000X	Hearing Instrument Specialist	Individuals who test hearing for the selection, adaptation, fitting, adjusting, servicing, and sale of hearing aids. Hearing Instrument Specialist is …
156FX1101X	Ophthalmic Assistant	An ophthalmic assistant assists ophthalmologists by performing duties including, but not limited to, patient charting, patient education, and basic ey…

HCPCS Level II L5000: Partial Foot Shoe Insert with Longitudinal Arch, Toe Filler

HCPCS-L5010-PARTIAL-FOOT-MOLDED-SOCKET-ANKLE-HEIGHT-TOE-FILLER

HCPCS L5010: Partial Foot Molded Socket, Ankle Height, With Toe Filler

HCPCS-L5020-PARTIAL-FOOT-MOLDED-SOCKET-TIBIAL-TUBERCLE-TOE-FILLER

HCPCS L5020: Partial Foot Molded Socket with Toe Filler

HCPCS-L5050-ANKLE-SYMES-MOLDED-SOCKET-SACH-FOOT

HCPCS L5050: Ankle/Symes Molded Socket with SACH Foot

HCPCS-L5060-ANKLE-SYMES-METAL-FRAME-MOLDED-LEATHER-SOCKET-ARTICULATED-ANKLE-FOOT

HCPCS L5060: Ankle/Symes Metal Frame with Molded Leather Socket

HCPCS-L5100-BELOW-KNEE-MOLDED-SOCKET-SHIN-SACH-FOOT

HCPCS Level II L5100: Below-Knee Molded Socket with Shin and SACH Foot

HCPCS-L5105-BELOW-KNEE-PLASTIC-SOCKET-SACH-FOOT

HCPCS L5105: Below-Knee Plastic Socket Prosthesis with SACH Foot

HCPCS-L5150-KNEE-DISARTICULATION-MOLDED-SOCKET-EXTERNAL-KNEE-SACH-FOOT

HCPCS L5150: Knee Disarticulation Molded Socket with External Knee and SACH Foot

HCPCS-L5160-KNEE-DISARTICULATION-MOLDED-SOCKET-BENT-KNEE-SACH-FOOT

HCPCS Level II L5160: Knee Disarticulation Molded Socket, Bent Knee Configuration

HCPCS-L5200-ABOVE-KNEE-MOLDED-SOCKET-SINGLE-AXIS-KNEE-SACH-FOOT

HCPCS Level II L5200: Above-knee Prosthesis with Molded Socket and Single-axis Knee

Showing 1–10 of 472

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.

OpenPayer

HCPCS L5972: Lower Extremity Prosthetic Foot, Flexible Keel

Sign up for hcpcs L5972 policy alerts

OpenPayer

HCPCS L5972: Lower Extremity Prosthetic Foot, Flexible Keel

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Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related Codes

References

HCPCS L5972: Lower Extremity Prosthetic Foot, Flexible Keel

Sign up for hcpcs L5972 policy alerts

HCPCS L5972: Lower Extremity Prosthetic Foot, Flexible Keel

Sign up for hcpcs L5972 policy alerts

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related Codes

What does HCPCS code L5972 represent and when is it used?

Where and in what clinical settings is L5972 typically provided?

Which modifiers are commonly used with L5972 and when should they be applied?

Which CPT codes are related to services provided with L5972 and how do they relate?

Which payers are referenced for L5972 and does the page provide payer-specific coverage details?

References

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related Codes

What does HCPCS code L5972 represent and when is it used?

Where and in what clinical settings is L5972 typically provided?

Which modifiers are commonly used with L5972 and when should they be applied?

Which CPT codes are related to services provided with L5972 and how do they relate?

Which payers are referenced for L5972 and does the page provide payer-specific coverage details?

References