Is light therapy for psoriasis covered by insurance?
Often yes, once creams have failed, but many plans want approval first and cap how many sessions they will pay for. Code 96910 is the in office treatment where staff apply tar or petrolatum and then treat the skin with UVB light. A session with light alone is a different code, 96900, and pays less.
Often
Covered after prior approval
2 to 3 a week
A course runs two or three sessions a week for months. Each session bills on its own date, so the patient share repeats every single visit.
Prior approval
Many commercial plans want approval before session one plus proof that creams failed. Starting without it is the most expensive mistake on this code.
96900 instead
If staff did not apply tar or petrolatum, the light only code is the correct one. Sending 96910 anyway invites takebacks when a payer reviews the flow sheets.
Yearly caps
Plans cap sessions per year and sometimes per course. One check before scheduling shows plan status and any prior authorization flag the payer reports.
What would a real check show for this patient's 96910?
Pick a sample plan and type your per-session fee. This is the visibility a real-time check gives the desk for every actual patient, in under a second.
Eligibility readout · 96910
Sample- Coverage
- Active, prior authorization on file
- Frequency
- Approved for 30 sessions this year
- Patient share
- Type your fee to see it
Estimate from a sample plan. A real check reads the actual plan in under a second.
When 96910 is the right code
- Tar or petrolatum applied by staff before the light
- Psoriasis, eczema or vitiligo that creams did not control
- Treatment given in the office, not at home
- One session, one date of service, one unit
- The plan's approval is on file where it is required
Documentation payers expect
Payers expect the diagnosis, the treatments already tried and failed, and a flow sheet for every session showing what was applied, the UVB dose and the exposure time. Prior authorization is common on commercial plans.
Why phototherapy claims get denied
What the whole course costs
Phototherapy is not one visit, it is a schedule. Two or three sessions a week for two or three months means the patient share lands over and over, and a yearly cap can run out mid course. Some patients then move to a home unit, E0691, which is a durable equipment claim with its own approval and a rule about using a supplier inside the plan's network. Checking the plan and the cap before session one is what keeps that conversation calm.
96910, quick answers
Does insurance cover light therapy for psoriasis?
Most plans cover it for psoriasis, eczema and vitiligo after other treatment has failed. Many also require prior approval before the first session.
How many sessions will a plan pay for?
Plans usually cap sessions per year, and the cap varies widely. The eligibility check shows plan status and flags prior authorization where the payer reports it.
Why is there a copay every single time?
Each session bills as its own procedure on its own date, so a copay or coinsurance applies each visit. At two or three visits a week, that adds up quickly.
Does Medicare cover phototherapy?
Original Medicare generally covers office phototherapy for conditions like psoriasis when it is medically necessary and documented, with the usual 20% coinsurance after the Part B deductible. Local rules set frequency, and Medicare Advantage plans can still require approval.
Why did my bill show 96900 instead?
96900 is the light only code. If nobody applied tar or petrolatum in the office, that is the code payers expect, and claims sent as 96910 get reduced.
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Related: 96900 · 96920 · E0691
CPT is a registered trademark of the American Medical Association. This page is Valian's own plain-English summary for front-desk teams, not official CPT descriptor text, and is not billing or clinical advice. Coverage patterns are common plan behaviors; every plan differs. Verify benefits before the visit.