Hidradenitis suppurativa is rated by analogy under 38 CFR 4.118 because the condition does not have its own diagnostic code in the VA schedule. The two most common controlling codes are DC 7806 (dermatitis or eczema) when the rating turns on body surface area, and DC 7825 (chronic urticaria) when the rating turns on systemic immunosuppressive therapy. Ratings range from 0% for limited involvement through 60% for more than 40% body surface area or constant immunosuppressive therapy. Painful, unstable, or disfiguring scars may be separately ratable under DC 7800-7805.

What Hidradenitis Suppurativa Is

Hidradenitis suppurativa (HS) is a chronic inflammatory skin condition characterized by painful, recurrent nodules, abscesses, draining sinus tracts, and scarring in areas rich in apocrine glands. The condition most commonly affects the axillae, groin, perianal area, inframammary folds, and gluteal cleft. Lesions progress through stages of nodule, abscess, sinus tract, and fibrosis, often with persistent drainage and severe pain.

HS is more than a skin disease. It is a systemic inflammatory disorder associated with metabolic syndrome, depression, chronic pain, and significant functional impairment. The unpredictable flares affect work attendance, mobility, hygiene, and quality of life. For veterans, HS often presents during or shortly after active duty when friction, heat, sweat, and limited hygiene conditions accelerate the disease.

Diagnostic Codes Used by Analogy

The VA schedule under 38 CFR 4.118 does not assign a unique code to HS. The rater selects the most closely analogous code based on the dominant clinical feature.

DC 7806 — Dermatitis or Eczema

This is the most commonly used code for HS when the rating turns on the extent of skin involvement. The tier structure is body-surface-area driven and supplemented by treatment intensity.

DC 7825 — Chronic Urticaria

This code applies when systemic immunosuppressive therapy is the dominant treatment modality. HS treated with biologics such as adalimumab (Humira), infliximab, or other TNF-alpha inhibitors often rates under DC 7825 because the therapy is what controls the disease.

Other Possible Codes

Body Surface Area and the DC 7806 Tiers

Under DC 7806, the rating ladder is:

Practical Point: Accurate body surface area documentation is the single most important rating factor under DC 7806. A dermatology note that records measured percent involvement (palm method or imaging) supports a defensible higher tier. A vague note that records "axillary HS" without a BSA estimate often defaults to the lowest tier.

Systemic Therapy and the DC 7825 Pathway

When HS is managed primarily with systemic biologic therapy, the rater may apply DC 7825 (chronic urticaria) by analogy. The tier structure is:

For veterans on adalimumab (Humira) or other biologics maintained continuously to suppress HS, the 60% tier is often the closer analogous fit because the therapy is functionally constant immunosuppression. Documentation of the prescription, dose, and duration is critical.

Scarring as a Separate Rateable Condition

HS produces extensive scarring from chronic abscesses, sinus tracts, and surgical excisions. These scars can be separately compensated when they meet the criteria under DC 7800-7805.

Separate scar ratings are not pyramiding when they describe a distinct functional or aesthetic impairment from the underlying inflammatory disease.

Service-Connection Pathways

Direct Service Connection

Direct service connection is supported when service treatment records document HS onset or active treatment during active duty. Common in-service events include first nodule or abscess noted during routine physical, sick call visits for "boils" or "ingrown hairs" in the axillae or groin, surgical incision and drainage during service, or formal HS diagnosis by military dermatology.

Aggravation

HS can pre-exist enlistment in a mild form and worsen during service beyond its natural progression. Aggravation is supported when the medical opinion compares pre-service severity to in-service or post-service severity and identifies in-service factors that accelerated the disease. Common aggravating factors during service include:

Secondary Service Connection

Under 38 CFR 3.310, HS may be granted secondary service connection when it is caused or aggravated by a service-connected condition. Common pathways include:

Evidence That Supports the Record

Common Mistakes to Avoid

Disclaimer: Semper Solutus provides medical documentation services and educational information. We do not prepare or submit claims or represent veterans before the VA. The information in this article is educational in nature and does not constitute legal advice. Veterans seeking claims representation should consult a VA-accredited attorney or claims agent.

Frequently Asked Questions

Hidradenitis suppurativa is rated by analogy under 38 CFR 4.118 because it does not have its own diagnostic code. The most common analogous codes are DC 7806 (dermatitis or eczema) when the condition affects body surface area, and DC 7825 (chronic urticaria) when systemic immunosuppressive therapy is the primary treatment. Ratings range from 0% for limited involvement through 60% for whole-body coverage or constant immunosuppressive therapy.

Yes, when the in-service evidence supports it. Direct service connection is established when service treatment records document onset or treatment during active duty. Aggravation is established when a pre-existing condition worsened beyond its natural progression during service, often from friction injuries from uniforms and gear, prolonged heat and sweat exposure, or limited hygiene conditions during deployment. Secondary service connection may apply when hidradenitis suppurativa is caused or aggravated by a service-connected condition such as obesity-as-intermediary, diabetes, or PTSD-related lifestyle factors.

Under DC 7806, body surface area (BSA) is a primary rating factor. A 60% rating requires more than 40% of the entire body or exposed areas affected, or constant or near-constant systemic therapy with corticosteroids or other immunosuppressive drugs. 30% requires 20-40% BSA or systemic therapy for six or more weeks during the past 12 months. 10% requires at least 5% but less than 20% BSA, or intermittent systemic therapy. Accurate BSA documentation by a dermatologist is essential to the rating outcome.

Scars from chronic abscesses and surgical excisions may be separately ratable under 38 CFR 4.118 DC 7800-7805. Painful scars (DC 7804) are rated 10% for one or two scars and up to 30% for five or more. Unstable scars or scars limiting function (DC 7805) are evaluated based on their impact. Disfiguring scars of the head, face, or neck (DC 7800) carry higher ratings based on the eight characteristics of disfigurement.

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