Pes Cavus (High Arches)

Everyone knows flat feet are ratable. Fewer veterans know the opposite deformity has its own code with higher top-end ratings. Pes cavus, acquired claw foot, is rated under DC 5278 in 38 CFR § 4.71a across four severity tiers: slight at 0 percent, moderate at 10, severe at 30 bilateral or 20 unilateral, and pronounced at 50 bilateral or 30 unilateral. The criteria are anatomical: dropped forefoot with contracted fascia and hammer toes at the top, down to a slight tier at the bottom that the code does not define further.

The rating side is straightforward. The service-connection side requires more care because 38 CFR § 4.57 describes pes cavus as a typically congenital or juvenile disease and says service connection is not in order without trauma or other definite evidence of aggravation. When the condition pre-existed service, the record must show the legally required aggravation rather than natural progression. When a service-connected neurological condition drives an acquired deformity, secondary service connection may apply. Trauma in service is another possible lane. This page walks through the four tiers, the bilateral criteria, § 4.57, the claim theories, the same-foot rules, and the failure modes.

TL;DR

• Pes cavus (acquired claw foot) is rated under DC 5278 (38 CFR § 4.71a): pronounced 50% bilateral or 30% unilateral, severe 30%/20%, moderate 10%/10%, slight 0%.
• The tiers are anatomical: hammer toes, dropped forefoot, contracted plantar fascia, ankle dorsiflexion limits, callosities, and varus deformity decide the level.
• Section 4.57 calls pes cavus a typically congenital or juvenile disease and requires trauma or other definite evidence of aggravation for service connection. Section 3.306 supplies the general aggravation framework.
• An acquired deformity caused or aggravated by a service-connected neurological condition may be claimed secondarily under 38 CFR § 3.310, with supporting medical evidence.
• Same-foot bars: a claw foot rating cannot combine with hammer toe (DC 5282) or hallux rigidus (DC 5281) ratings on the same foot.
• Pes cavus is the mirror of flat feet (DC 5276): opposite deformity, separate code, and the two do not describe the same foot.
• Cavus feet load the forefoot and destabilize the ankle, feeding metatarsalgia, plantar fascia strain, and ankle sprain chains; secondary relationships need their own evidence.
• No verified Board-outcome statistic specific to pes cavus claims is available, so this page publishes none.

DC 5278: The Claw-Foot Schedule

The current criteria, tier by tier:

5278 Claw foot (pes cavus), acquired: Marked contraction of plantar fascia with dropped forefoot, all toes hammer toes, very painful callosities, marked varus deformity: 50% bilateral, 30% unilateral All toes tending to dorsiflexion, limitation of dorsiflexion at ankle to right angle, shortened plantar fascia, and marked tenderness under metatarsal heads: 30% bilateral, 20% unilateral Great toe dorsiflexed, some limitation of dorsiflexion at ankle, definite tenderness under metatarsal heads: 10% bilateral, 10% unilateral Slight: 0%

Two properties stand out. The schedule prices bilateral and unilateral separately inside the code, so there is no additional bilateral-factor computation on top; 50 percent IS the pronounced-bilateral price. And the tiers are not symptom-severity words, they are anatomical findings: toe position, ankle dorsiflexion, fascial shortening, metatarsal-head tenderness, callosities, varus deformity. The exam that documents the anatomy is the exam that sets the tier.

For orientation against the mirror code: acquired flatfoot (DC 5276) tops at 50 bilateral for the pronounced deformity as well, but rates its unilateral pronounced case at 30 and uses tenderness, spasm, and orthotic failure language. The two codes are structural opposites with similar pricing logic.

The Four Tiers in Plain Language

Slight (0%): the code lists this level only as "slight," with no further criteria. Service-connected but noncompensable.

Moderate (10%/10%): the great toe dorsiflexes, some ankle dorsiflexion limitation appears, and there is definite tenderness under the metatarsal heads. The forefoot is starting to pay for the arch.

Severe (30%/20%): all toes tend toward dorsiflexion (the claw pattern), ankle dorsiflexion is limited to a right angle, the plantar fascia has shortened, and metatarsal-head tenderness is marked. The foot is now structurally deforming, not just high.

Pronounced (50%/30%): the full picture: marked fascial contraction with dropped forefoot, every toe a hammer toe, very painful callosities, and marked varus deformity. This is the rigid, fixed cavus foot, and it is the only tier above 30.

Three Claim Theories

Aggravation (a pre-existing case). Section 4.57 says that, absent trauma or other definite evidence of aggravation, service connection is not in order for pes cavus, which it describes as typically congenital or juvenile. 38 CFR § 3.306 supplies the general framework for a disability noted before service that increased in severity during service, subject to the natural-progression rule. The evidence should compare the condition at entry, during service, and after service and should document anatomical or functional worsening, not merely temporary symptoms after exercise.

Secondary (an acquired neurological case). Muscle imbalance from peripheral neuropathy, spinal cord injury, or other motor-nerve dysfunction can produce or worsen a cavus deformity. When the driver is service connected, secondary service connection under 38 CFR § 3.310 may apply if the medical evidence connects the neurological condition to the foot mechanics. A unilateral or newly progressive cavus foot also warrants clinical evaluation for an underlying cause.

Direct (the rarer case). Traumatic onset: crush injuries, fractures, or tendon damage in service that reconstruct the foot into a cavus posture. Documented trauma plus documented deformity plus time, with the same current-tier anatomy rules at the end.

None of these is automatic, and the aggravation lane especially turns on the quality of the entry-versus-current comparison.

The Same-Foot Rules

The foot schedule polices double-counting deformity by deformity. A claw foot rating cannot combine with hammer toe (DC 5282) or hallux rigidus (DC 5281) on the same foot: the 5278 criteria already price the toe dorsiflexion and hammering at the severe and pronounced tiers, so the toe codes are absorbed (38 CFR § 4.14 bars counting the same manifestation twice anyway). The mirror-code boundary runs the other way: pes cavus and pes planus describe opposite deformities of the same arch, so a single foot is one or the other. Neighboring conditions with distinct findings, metatarsalgia (DC 5279) or plantar fasciitis (DC 5269), can rate alongside cavus when the examiner separates the findings.

The Cascade: What Cavus Feet Do Downstream

The biomechanics are the reason this page exists. A rigid high arch concentrates load on the heel and the metatarsal heads (forefoot pain, calluses, metatarsalgia), strains the plantar fascia along a shortened lever (plantar fasciitis), and rolls the ankle outward (instability, recurrent sprains, and the ankle claims that follow). These are recognized associations, useful for understanding which conditions tend to travel together, and every one of them needs its own diagnosis, its own evidence, and its own nexus for a secondary claim. Nothing in this paragraph is a promise that a cavus foot produces any of them in a given veteran.

The C&P Exam: Anatomy Is the Rating

The foot DBQ drives the exam, and for 5278 the examiner's checklist reads like the criteria: toe posture per toe (dorsiflexion, hammering), ankle dorsiflexion range, plantar fascia length and tenderness, callosity location and pain, forefoot position, varus alignment, orthotic relief, and gait. What strengthens the file:

• Serial podiatry documentation of progression: toe changes, callosities, fitting failures, orthotic prescriptions over years.
• Weight-bearing imaging showing the arch structure, and the neurological workup when progression or unilateral involvement suggests a driver.
• The comparison set for aggravation: entrance records, early service records, current exam, side by side.
• The orthotic trial: documented orthotic response (or failure) shows how the foot functions, though DC 5278 does not define any tier by relief with arch support.

The weak file is "high arches, foot pain" with no toe, ankle, or fascial findings documented; that exam cannot reach the moderate tier on the criteria's own text.

Common Failure Modes

Section 4.57 ignored. The claim asserts onset in service even though the condition pre-existed, or alleges aggravation without trauma or definite evidence of a lasting increase beyond natural progression.

No comparison evidence. An aggravation theory with no entry documentation and no in-service progression records, leaving "beyond natural progression" unprovable.

Undocumented anatomy. Toe posture, dorsiflexion, fascial length, and callosities unrecorded, so the tiers above slight are out of reach.

The toe double-count. Hammer toes separately rated on a foot that already holds a claw-foot rating, denied on the same-foot bar.

The ignored driver. A unilateral progressive cavus with no neurological workup, so the secondary lane (and, more importantly, the underlying condition) is never found.

Secondary Conditions and Neighbors

Pes cavus is the high-arch pole of the arch spectrum, opposite flat feet. Its load-bearing partners are metatarsalgia and Morton's neuroma (the forefoot it overloads) and plantar fasciitis (the fascia it shortens and strains), with the ankle as its instability neighbor. Neurological primaries live at peripheral neuropathy. Code references: /va-codes/5276 for the mirror and /va-codes/5284 for the catch-all neighbor. The secondary conditions tool maps the chains, and the combined rating calculator runs the stacked-foot math.

Bottom Line

Pes cavus is a four-tier anatomical schedule that reaches 50 percent for the pronounced bilateral picture. The tier comes from the documented anatomy. Service connection comes first: § 4.57 requires trauma or other definite evidence of aggravation for the typically congenital or juvenile disease it describes, while an acquired neurological deformity may support a secondary theory. Keep the express same-foot limits straight and avoid counting the same manifestations under multiple codes.

Methodology and Limitations

• Data source: Rating criteria paraphrased and quoted from the current eCFR text of 38 CFR § 4.71a, DC 5278, with neighbor codes 5276, 5281, 5282, 5279, and 5269 for the same-foot analysis; pes-cavus service-connection guidance from § 4.57; aggravation from § 3.306; secondary service connection from § 3.310; pyramiding from § 4.14. Criteria checked against the eCFR text dated 2026-09-20.
• Board statistics: No verified Board-outcome statistic specific to pes cavus claims is available, and a figure from a different condition (flat feet included) would not describe these claims, so this page publishes no outcome statistic.
• Limitations:
• Tier assignment is an examiner's anatomical judgment on the day, and progression documentation over time carries more weight than any single exam.
• Whether worsening exceeds natural progression is a medical-opinion question decided on the individual record, not by this page.
• The downstream associations (metatarsalgia, fasciitis, instability) are recognized biomechanical relationships, not certainties for any individual.
• These observations reflect the regulatory text and claim patterns, not legal or medical advice for a specific case.