However, if you perform the biopsy, then the documentation above would only allow reporting the biopsy, as the decision to perform a 0- or 10-day global procedure is “bundled” with the procedure if performed on the same date of service. Therefore, with the addition of the psoriasis diagnosis, you would now use a separate E/M code to report the psoriasis. You must append a modifier −25 to the E/M code to certify that you are dealing with a separate and discrete problem with no overlap in physician work.
Clearly you also have an E/M to report. But what level? Is this chronic? Yes, as CPT clearly defines chronic as “[a] problem with an expected duration of at least one year or until the death of the patient.”1,5
But is this stable progressive or showing side effects of treatment? “‘Stable’ for the purposes of categorizing MDM is defined by the specific treatment goals for an individual patient. A patient who is not at his or her treatment goal is not stable, even if the condition has not changed and there is no short-term threat to life or function,” according to the CPT descriptors. Therefore, in this scenario, the documentation would best fit a chronic illness with exacerbation, progression, or side effects of treatment (column 1, level 4), which is of moderate complexity.1
But what about column 3, where we look at risks of testing and treatment? This would depend on the type of treatment given. If an over-the-counter product such as a tar gel is recommended, this is a low risk (column 3, level 3), which would mean this lower value determines the E/M code to be 99213 or 99203 depending on whether this is an established or new patient, respectively. If we treat with a prescription medication such as a topical corticosteroid, we are providing prescription drug management (column 3, level 4), which is moderate risk, and we would use codes 99204 or 99214, assuming we document appropriately. Again, including the CPT terminology of “not at treatment goal” in your impression and “prescription drug management” in your plan tells an auditor what you are thinking and doing.1,5
The Takeaway—Clearly if a GEP is performed, there is a single CPT code used—99204 or 99214. If the biopsy is performed, there would be a biopsy code and an E/M code with a modifier −25 attached to the latter. For the documentation below, a 99204 or 99214 would be the chosen E/M code:
- CC: (1) New spot on left cheek that seems to be growing and changing shape rapidly; (2) Silvery spots on elbows, knees, and buttocks for which patient desires treatment.
- History: No family history of skin cancer; concerned about scarring, no blood thinner. Mom has psoriasis. Tried petroleum jelly on scaly areas but no better.
- Examination: Irregular tan to brown to black 8-mm macule. No lymphadenopathy. Silver scaly erythematous plaques on elbows, knees, sacrum.
- Impression: (1) Rule out melanoma (undiagnosed new problem with uncertain prognosis); (2) Psoriasis (chronic disease not at treatment goal).
- Plan: (1) Discuss risks, benefits, and alternatives, including biopsy (decision regarding minor surgery with identified patient or procedure risk factors) vs a noninvasive GEP melanoma rule-out test. Patient wants biopsy. Consent, biopsy via shave technique. Lidocaine hydrochloride 1% with epinephrine 1 cc, prepare and drape, aluminum chloride for hemostasis, ointment and bandage applied, care instructions provided; (2) Discuss options. Calcipotriene cream daily; triamcinolone ointment 0.1% twice a day (prescription drug management). Review bathing, avoiding trauma to site, no picking.
Scenario 4: Here for a Total-Body Screening Examination
Medicare does not cover skin cancer screenings as a primary CC. Being worried or knowing someone with melanoma are not CCs that are covered. However, “spot of concern,” “changing mole,” or ”new growth” would be. Conversely, if the patient has a history of skin cancer, actinic keratoses, or other premalignant lesions, and/or is immunosuppressed or has a high-risk genetic syndrome, the visit may be covered if these factors are documented in the note.6
For the diagnosis, the International Classification of Diseases, Tenth Revision, code Z12.83—“encounter for screening for malignant neoplasm of skin”—is not an appropriate primary billing code. However, D48.5—“neoplasm of behavior of skin”—can be, unless there is a specific diagnosis you are able to make (eg, melanocytic nevus, seborrheic keratosis).6