Cranial Prosthesis — an artificial covering designed to replace or replicate natural hair on the scalp, typically prescribed for individuals who have experienced significant hair loss due to a medical condition or treatment.

Supporting and Related Codes:

S8095 — Cranial prosthesis (wig) for hair loss due to alopecia areata, not covered by Medicare

A6501–A6513 — Gradient compression garments (not hair-related, sometimes confused)

Key Diagnoses Codes (ICD-10):

L66.1 — Lichen planopilaris

L63.0 - L63.9 — Alopecia areata (various)

L65.x — Other nonscarring hair loss

Z79.899 —Long-term drug therapy (e.g., chemo)

C18–C96 — Active malignancy codes (cancer-related hair loss)

• Lupus (especially DLE) is the most significant rheumatologic cause of permanent scarring alopecia.
• SLE more commonly causes non-scarring, reversible diffuse hair loss.
• Telogen effluvium (L65.0) is frequently triggered by the systemic inflammation of any active rheumatologic flare.
• When submitting for a cranial prosthesis, pairing the rheumatologic diagnosis code with the alopecia code (e.g., M32.9 + L63.9) strengthens the medical necessity argument.
• A rheumatologist's letter of medical necessity documenting the relationship between the condition and hair loss is valuable for insurance authorization.

Rheumatological / Connective Tissue Diseases

M32.0 — Drug-induced systemic lupus erythematosus

M32.9 — Systemic lupus erythematosus, unspecified

L93.0 — Discoid lupus erythematosus

L93.1 — Subacute cutaneous lupus erythematosus

M33.10 — Dermatomyositis, unspecified

M33.19 —Other dermatomyositis

M34.0 — Progressive systemic sclerosis

M34.9 — Systemic sclerosis, unspecified

M35.1 — Mixed connective tissue disease

M35.00 — Sjögren syndrome, unspecified

M35.09 — Sjögren syndrome, other

M35.9 — Systemic involvement of connective tissue, unspecified

Inflammatory Arthritis

M05.9 —Seropositive rheumatoid arthritis, unspecified

M06.9 — Rheumatoid arthritis, unspecified

M07.60 — Psoriatic arthritis, unspecified

M02.9 — Reactive arthritis, unspecified

Vasculitis & Vascular Conditions

M31.6 — Other giant cell arteritis

M31.30 — Wegener's granulomatosis without renal involvement

M31.31 — Wegener's granulomatosis with renal involvement

M30.0 —Polyarteritis nodosa

D68.61 — Antiphospholipid syndrome

Medication / Drug-Induced Hair Loss

T45.1X5A — Adverse effect of antineoplastic/immunosuppressive drugs, initial encounter

T45.1X5D — Adverse effect of antineoplastic/immunosuppressive drugs, subsequent encounter

L64.0 — Drug-induced androgenic alopecia

Alopecia & Hair Loss Codes

L63.0 — Alopecia totalis

L63.1 — Alopecia universalis

L63.9 — Alopecia areata, unspecified

L64.0 — Drug-induced androgenic alopecia

L64.8 — Other androgenic alopecia

L64.9 — Androgenic alopecia, unspecified

L65.0 — Telogen effluvium

L65.8 —Other specified nonscarring hair loss

L65.9 — Hair loss, unspecified

L66.1 — Lichen planopilaris

L66.2 — Folliculitis decalvans

L66.3 —Perifolliculitis capitis abscedens

L66.9 — Cicatricial alopecia, unspecified

Cancer / Chemotherapy-Related

Z79.899 — Long-term use of other medication (e.g., chemotherapy)

C18 – C96 — Malignant neoplasms (active cancer diagnosis — use specific code)