HCPCS L5974: Lower Extremity Prosthesis, Single-Axis Ankle/Foot

HCPCS Level II code L5974 describes an itemized prosthetic component: all lower extremity prostheses, foot, single axis ankle/foot, used as a single-axis ankle/foot device to provide controlled plantarflexion/dorsiflexion for patients with lower-limb amputations; service type is prosthetic device supply and fitting, and the typical site of service is outpatient prosthetics clinics or specialty prosthetic/orthotic facilities where device selection, fitting, and adjustments occur.

Customize your policy alerts

Sign up for hcpcs L5974 policy alerts

Get alerted when payer policies referencing L5974 are released or updated.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Explore openpayer tools

View all tools

HCPCS L5974: Lower Extremity Prosthesis, Single-Axis Ankle/Foot

Customize your policy alerts

Sign up for hcpcs L5974 policy alerts

Get alerted when payer policies referencing L5974 are released or updated.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Clinical & Coding Specifications

Clinical Context

A 58-year-old male with a transtibial amputation presents to a prosthetics clinic for fitting of an all lower extremity prosthesis component: a foot with a single-axis ankle/foot (L5974). The patient reports instability during gait and difficulty with uneven surfaces. The clinical workflow begins with a multidisciplinary evaluation: the prosthetist performs a residual-limb and socket assessment, documents limb volume and skin integrity, and confirms current functional level (K-level). The clinician reviews prior amputation surgery notes, vascular and diabetic comorbidities, and recent physical therapy progress notes. A trial socket and alignment check are performed, followed by bench alignment and dynamic gait training once the L5974 foot/ankle unit is attached. Device fabrication, adjustments, and patient education on donning/doffing, skin inspection, and maintenance are documented. Follow-up visits assess fit, function, and any need for modification or replacement. Billing uses L5974 for the single-axis ankle/foot component supplied as part of the lower-extremity prosthesis, with appropriate modifiers as indicated by Medicare, commercial payors, and the site of service.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`97760`	Orthotic and prosthetic management and training, initial encounter, each 15 minutes	Often billed for patient training in donning/doffing, gait training, and functional use after fitting `L5974`
`97762`	Orthotic and prosthetic management and training, subsequent encounter, each 15 minutes	Used for follow-up training sessions after initial prosthetic fitting with `L5974`
`99070`	Supplies and materials (eg, additional supplies) furnished directly to the patient	Used for non-coded accessories or consumables supplied with the prosthesis when payors permit
`99455`	Work-related or medical disability evaluation services, with preparation and report	May be performed when functional capacity evaluation is required after prosthesis fitting
`99080`	Miscellaneous services (administrative)	For documentation or form completion related to prosthetic provision when billable per payer policies

Related Modifiers

5 rows

Modifier	Description	When to Use
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…
76	Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…	- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
66	Modifier 66 (Surgical Team) is used when three or more surgeons act as primary surgeons on a single, highly complex procedure. The AMA defines it for use when a surgical team — often composed of…	- Use modifier 66 when three or more surgeons act as primary surgeons working collaboratively as a surgical team on a single, highly complex or difficult procedure (for example organ…
58	Modifier 58 (Staged or related procedure/service by the same physician during the postoperative period) indicates that a subsequent procedure performed by the same provider during the…	- Use modifier 58 when the same physician/QHP performs a procedure during the postoperative/global period of an earlier procedure and the subsequent procedure is either planned or anticipated…
[object Object]

Related Provider Taxonomies

8 rows

Taxonomy Code	Specialty	Notes
333600000X	Pharmacy	A facility used by pharmacists for the compounding and dispensing of medicinal preparations and other associated professional and administrative servi…
207X00000X	Orthopaedic Surgery Physician	An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated…
207K00000X	Allergy & Immunology Physician	An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Select…
163W00000X	Registered Nurse	(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive…
103T00000X	Psychologist	A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, a…
2471C1101X	Cardiovascular-Interventional Technology Radiologic Technologist	A radiologic technologist who specializes in cardiovascular interventional technology.
2085R0202X	Diagnostic Radiology Physician	A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
2255A2300X	Athletic Trainer	Athletic trainers are allied health care professionals who work in consultation with or under the direction of physicians, and specialize in the preve…

Related ICD-10-CM Codes

25 rows

ICD-10-CM Code	Description
E11.621	Type 2 diabetes mellitus with foot ulcer
G60.0	Hereditary motor and sensory neuropathy
G62.9	Polyneuropathy, unspecified
I70.213	Atherosclerosis of native arteries of extremities with intermittent claudication, bilateral legs
I73.9	Peripheral vascular disease, unspecified
M16.11	Unilateral primary osteoarthritis, right hip
M16.12	Unilateral primary osteoarthritis, left hip
M17.11	Unilateral primary osteoarthritis, right knee
M17.12	Unilateral primary osteoarthritis, left knee
M86.171	Other acute osteomyelitis, right ankle and foot

Showing 1–10 of 25

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.

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.

Explore openpayer tools

View all tools

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`97760`	Orthotic and prosthetic management and training, initial encounter, each 15 minutes	Often billed for patient training in donning/doffing, gait training, and functional use after fitting `L5974`
`97762`	Orthotic and prosthetic management and training, subsequent encounter, each 15 minutes	Used for follow-up training sessions after initial prosthetic fitting with `L5974`
`99070`	Supplies and materials (eg, additional supplies) furnished directly to the patient	Used for non-coded accessories or consumables supplied with the prosthesis when payors permit
`99455`	Work-related or medical disability evaluation services, with preparation and report	May be performed when functional capacity evaluation is required after prosthesis fitting
`99080`	Miscellaneous services (administrative)	For documentation or form completion related to prosthetic provision when billable per payer policies

Related Modifiers

5 rows

Modifier	Description	When to Use
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…
76	Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…	- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
66	Modifier 66 (Surgical Team) is used when three or more surgeons act as primary surgeons on a single, highly complex procedure. The AMA defines it for use when a surgical team — often composed of…	- Use modifier 66 when three or more surgeons act as primary surgeons working collaboratively as a surgical team on a single, highly complex or difficult procedure (for example organ…
58	Modifier 58 (Staged or related procedure/service by the same physician during the postoperative period) indicates that a subsequent procedure performed by the same provider during the…	- Use modifier 58 when the same physician/QHP performs a procedure during the postoperative/global period of an earlier procedure and the subsequent procedure is either planned or anticipated…
[object Object]

Related Provider Taxonomies

8 rows

Taxonomy Code	Specialty	Notes
333600000X	Pharmacy	A facility used by pharmacists for the compounding and dispensing of medicinal preparations and other associated professional and administrative servi…
207X00000X	Orthopaedic Surgery Physician	An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated…
207K00000X	Allergy & Immunology Physician	An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Select…
163W00000X	Registered Nurse	(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive…
103T00000X	Psychologist	A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, a…
2471C1101X	Cardiovascular-Interventional Technology Radiologic Technologist	A radiologic technologist who specializes in cardiovascular interventional technology.
2085R0202X	Diagnostic Radiology Physician	A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
2255A2300X	Athletic Trainer	Athletic trainers are allied health care professionals who work in consultation with or under the direction of physicians, and specialize in the preve…

Related ICD-10-CM Codes

25 rows

ICD-10-CM Code	Description
E11.621	Type 2 diabetes mellitus with foot ulcer
G60.0	Hereditary motor and sensory neuropathy
G62.9	Polyneuropathy, unspecified
I70.213	Atherosclerosis of native arteries of extremities with intermittent claudication, bilateral legs
I73.9	Peripheral vascular disease, unspecified
M16.11	Unilateral primary osteoarthritis, right hip
M16.12	Unilateral primary osteoarthritis, left hip
M17.11	Unilateral primary osteoarthritis, right knee
M17.12	Unilateral primary osteoarthritis, left knee
M86.171	Other acute osteomyelitis, right ankle and foot

Showing 1–10 of 25

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 L5974: Lower Extremity Prosthesis, Single-Axis Ankle/Foot

Sign up for hcpcs L5974 policy alerts

OpenPayer

HCPCS L5974: Lower Extremity Prosthesis, Single-Axis Ankle/Foot

Sign up for hcpcs L5974 policy alerts

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related ICD-10-CM Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related ICD-10-CM Codes

Related Codes

References

HCPCS L5974: Lower Extremity Prosthesis, Single-Axis Ankle/Foot

Sign up for hcpcs L5974 policy alerts

HCPCS L5974: Lower Extremity Prosthesis, Single-Axis Ankle/Foot

Sign up for hcpcs L5974 policy alerts

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related ICD-10-CM Codes

Related Codes

What does HCPCS code L5974 represent and where is it typically provided?

Which modifiers should I consider when billing L5974?

What clinical documentation and workflow are described for fitting an L5974 single‑axis ankle/foot?

Which related CPT codes might be billed alongside L5974 and for what services?

What diagnoses and provider specialties are associated with L5974 fittings?

References

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related ICD-10-CM Codes

Related Codes

What does HCPCS code L5974 represent and where is it typically provided?

Which modifiers should I consider when billing L5974?

What clinical documentation and workflow are described for fitting an L5974 single‑axis ankle/foot?

Which related CPT codes might be billed alongside L5974 and for what services?

What diagnoses and provider specialties are associated with L5974 fittings?

References