Podiatry CPT Codes Cheat Sheet (2026)

The table below is the printable core. It groups the codes podiatry practices bill most, flags which routine-foot-care codes require a qualifying at-risk diagnosis plus a Q modifier, and gives the CMS PFS 2026 national non-facility ballpark. Reimbursement is CMS PFS 2026 national, non-facility, rounded — your MAC locality, place of service, and payer contract will change every dollar, so price against your own fee schedule.

Routine foot care codes flagged "Yes" are statutorily excluded by Medicare and only become payable when a covered systemic diagnosis is on the claim and the correct class-finding modifier (Q7, Q8, or Q9) is appended. The two exceptions are 11719 (trimming nondystrophic nails, payable when reasonable and necessary) and G0127 (dystrophic/mycotic nail trimming, which carries its own indication rather than the at-risk-foot rule). Always validate each code against the current CPT/HCPCS set and your payer's LCD before billing — code descriptors and coverage edits change annually.

Routine foot care — cutting or removing corns and calluses, trimming and debriding nails, and other hygienic maintenance of the feet — is statutorily excluded from Medicare coverage under Section 1862(a)(13) of the Social Security Act. That exclusion is the root cause of most podiatry denials: the service is non-covered by default, not because the documentation was weak, but because the law says routine maintenance of the feet is the patient's responsibility.

Medicare carves out three exceptions where routine foot care becomes covered:

1. The at-risk foot. A patient with a qualifying systemic condition (most commonly diabetes mellitus with peripheral neuropathy or peripheral vascular disease) whose loss of protective sensation or circulation makes self-care or care by a non-professional hazardous. This is the big one, and it is gated by the class-finding modifiers (Q7/Q8/Q9) plus a covered diagnosis.
2. Mycotic nail debridement (11720/11721). Covered when the patient has clinical evidence of mycosis (fungal infection) and either pain/secondary infection or, for an ambulatory patient, marked limitation of ambulation. G0127 covers dystrophic nail trimming under a similar clinical rationale.
3. Treatment of a non-routine condition. When the "foot care" is actually treatment of a covered condition — an ulcer, a wound, an injury — it is billed under the appropriate procedure or wound-care code, not as routine foot care, and the exclusion does not apply.

The practical consequence: for the at-risk-foot pathway, three things must be present on the claim for routine foot care to pay — a covered systemic ICD-10 diagnosis, documentation of a qualifying class finding, and the corresponding Q modifier. Miss any one and the line denies as a statutory exclusion (frequently surfacing as a PR-204 non-covered or a CO-50 medical-necessity denial depending on payer). In our podiatry audits the most common revenue leak is not the surgical side at all — it is at-risk routine foot care billed without the Q modifier, or billed at the right frequency but missing the systemic diagnosis link in the documentation.

The Q modifiers tell Medicare which combination of physical findings establishes that the patient's foot is at risk. They are HCPCS Level II modifiers appended to the routine-foot-care CPT (11055-11057, 11720/11721) and they encode CMS's class-finding system. The findings break into three classes, and the modifier reports the qualifying combination.

Class A finding (the severe one):

• Nontraumatic amputation of foot or integral skeletal portion thereof.

Class B findings (moderate):

• Absent posterior tibial pulse
• Absent dorsalis pedis pulse
• Advanced trophic changes — counts as a single Class B finding only when three or more of the following are present: hair growth decrease, nail changes (thickening), pigmentary changes (discoloration), skin texture changes (thin/shiny), skin color changes (rubor/redness).

Class C findings (mild):

• Claudication
• Temperature changes (e.g., cold feet)
• Edema
• Paresthesias (abnormal sensation)
• Burning.

How the modifiers map: Q7 needs one Class A finding. Q8 needs two Class B findings. Q9 needs one Class B finding plus two Class C findings. The supervising/treating M.D. or D.O. who diagnosed or is treating the qualifying systemic condition generally must have seen the patient within the timeframe your MAC's LCD specifies (commonly within the six months prior to the foot care, though the exact window is set by the local LCD — verify yours). The class findings and the systemic diagnosis both have to be documented in the note, not just coded. The single most common at-risk denial is a routine-foot-care line submitted with the covered diagnosis but no Q modifier, because the biller treated the diagnosis as sufficient. It is not — the Q modifier is what tells the payer the class-finding rule is met.

A Q modifier without a covered systemic diagnosis still denies, and a covered diagnosis without the Q modifier still denies. Both have to be on the claim. Each MAC publishes the exact covered ICD-10 list in its routine-foot-care Local Coverage Determination (LCD) and the associated billing-and-coding article — always pull your MAC's current LCD; the families below are illustrative, not a substitute for it.

The diagnosis families that most commonly unlock at-risk routine foot care:

• Diabetes mellitus with complications — particularly with diabetic peripheral neuropathy or peripheral angiopathy/circulatory complications (the E11.4x, E11.5x families and related). Diabetes with loss of protective sensation is the dominant covered pathway.
• Peripheral arterial / vascular disease — atherosclerosis of native arteries of the extremities, peripheral angiopathy.
• Chronic venous insufficiency / peripheral vascular insufficiency.
• Peripheral neuropathy from other systemic causes — e.g., chronic inflammatory or hereditary neuropathies recognized in the LCD.
• Other systemic conditions named in the MAC LCD — these vary by contractor and can include conditions such as Buerger's disease, arteriosclerosis obliterans, and certain neuropathies.

Two documentation rules trip up most practices:

1. *The systemic diagnosis must be the patient's documented condition treated by an M.D./D.O., and that physician's last visit date frequently must be recorded* on the claim or in the note per the LCD. Some MACs require the date of the most recent visit to the treating physician for the systemic condition.
2. Frequency. Covered at-risk routine foot care is generally payable no more often than once every 60 days unless the documentation supports medical necessity for a shorter interval. Billing inside the 60-day window without supporting documentation produces a frequency-edit denial. For coding-specificity and modifier hygiene that survive an audit, an independent medical coding audit catches the diagnosis-to-modifier mismatches before the payer does.

Beyond routine foot care, the revenue-dense side of podiatry is the surgical and procedure code set — nail procedures, bunion and hammertoe corrections, fracture care, injections, and wound debridement. These do not require the at-risk diagnosis or Q modifiers, but they introduce a different denial surface: global periods, bundling (NCCI/CARC 97), and bilateral/multiple-procedure modifier rules.

Nail procedures (frequently billed, frequently miscoded):

• 11730 / 11732 — Avulsion of nail plate, single / each additional. Use for acute ingrown-nail relief without matrix destruction.
• 11750 — Excision of nail and nail matrix, permanent removal (matrixectomy). Carries a 10-day global, so a same-week post-op visit bundles.
• CPT 11765 — Wedge excision of skin of nail fold.

Bunion, hammertoe, and bone procedures (90-day global):

• 28285 — Hammertoe correction, one toe (report per toe; use anatomic toe modifiers T-modifiers / TA-T9).
• 28296 — Bunionectomy with distal metatarsal osteotomy (the common Austin/chevron). Other bunion variants: 28292, 28297, 28298, 28299 — pick by the exact osteotomy/arthrodesis performed.
• 28110 — Bunionette (tailor's bunion) ostectomy of the fifth metatarsal head.
• 28310 / 28312 — Osteotomy, first / other phalanx.

Fracture care:

• 28510 — Closed treatment, phalangeal fracture (other than great toe), without manipulation.
• 28490 — Closed treatment of great-toe fracture, without manipulation.

Injections and wound care:

• 20550 / 20551 — Injection of tendon sheath/ligament or tendon origin (plantar fasciitis). 0-day global; watch for J-code drug billing alongside.
• 97597 / 97598 — Active wound-care debridement by sq cm (epidermis/dermis); 11042-11047 — surgical debridement to deeper tissue, coded by depth and area.

Two coding rules that prevent the most surgical denials:

1. Use anatomic-specific toe and side modifiers (T1-T9, TA for great toes; RT/LT; 50 for bilateral where allowed) so the payer can distinguish multiple procedures on different digits — without them, the second procedure bundles or rejects as a duplicate.
2. Respect the global period. An E/M or minor procedure inside a 10- or 90-day global from another podiatry surgery denies CO-97 (bundled) unless a global modifier (24, 25, 57, 58, 78, 79) legitimately applies. Podiatry, with its high volume of staged and bilateral procedures, sees more global-period bundling than most specialties — covered next.

Podiatry denials cluster into a predictable set, and the top three all trace back to routine foot care or global periods. Below is the worklist map — named CARC codes, the root cause, and the fix.

The two highest-yield prevention moves in podiatry are (1) a front-end edit that blocks any routine-foot-care line lacking both a covered systemic diagnosis and a Q modifier, and (2) an EHR template that captures the class findings (Class A/B/C) at the encounter so the Q-modifier selection is automatic. Together they eliminate the PR-204, CO-50, and missing-modifier denials that make up the majority of podiatry rework. For the surgical side, NCCI PTP scrubbing plus anatomic-modifier enforcement handles CO-97 and CO-236 before submission. A medical billing audit of your last 90 days of foot-care claims will quantify exactly how much of this you are leaving on the table.

Routine foot care is one of the most-audited service lines in Medicare because of the statutory exclusion — a clean note is the difference between getting paid and a recoupment. Use this checklist before any at-risk routine-foot-care claim leaves the practice:

For at-risk routine foot care (11055-11057, 11720/11721):

• The qualifying systemic diagnosis is documented and coded (diabetic neuropathy, PVD/PAD, etc.), and matches your MAC LCD's covered list.
• The class findings are recorded by class (which Class A, B, or C findings are present) — not just "at-risk foot."
• The Q modifier (Q7/Q8/Q9) appended matches the documented class-finding combination.
• The date of the most recent visit to the M.D./D.O. treating the systemic condition is captured if the LCD requires it.
• The services rendered are described specifically (which nails debrided, which lesions pared).
• The frequency respects the ~60-day interval, or the note justifies a shorter interval.

For mycotic nail debridement (11720/11721) and G0127:

• Clinical evidence of mycosis/dystrophy documented (and, where the LCD requires, lab/clinical confirmation).
• Pain, secondary infection, or marked limitation of ambulation documented to support medical necessity.

For surgical/procedure codes (28xxx, 11730/11750, etc.):

• Anatomic modifiers (T1-T9/TA, RT/LT, 50) identify each digit/side.
• Global-period status checked before billing any related E/M or minor procedure.
• NCCI PTP edits scrubbed pre-submission; distinct-service documentation captured when a modifier 59/X-modifier is used.

When the service is genuinely not covered (a patient who is not at-risk requesting nail trimming), the compliant path is an Advance Beneficiary Notice (ABN) with modifier GA (or GX for a voluntary ABN on a statutorily excluded service), which makes the patient financially liable and protects the practice. Billing the patient for non-covered routine foot care without a valid ABN is the most common podiatry compliance miss. We typically build these checks directly into the front-end scrubber so the claim cannot advance without the required elements — the same discipline that keeps a high clean claim rate.