A dermatology EMR is the record a skin practice uses to document lesions where they sit on the body, store the photographs that show change over time, and follow every biopsy until a pathology result reaches the patient. Dermatology is a visual specialty, so the image library carries as much clinical weight as the note.
This guide covers body maps and lesion identity, clinical and dermoscopic imaging standards, the biopsy and pathology loop, Mohs surgery records, isotretinoin monitoring, and the privacy rules that apply to skin photographs.
What should a dermatology EMR handle?
Building dermatology imaging or pathology workflows?
Agnotic builds dermatology software for the client: lesion maps, image storage, pathology result routing and EHR integration.
A dermatology EMR should give every lesion a persistent identity on a body map, attach dated clinical and dermoscopic images to it, and track each biopsy from specimen to signed pathology result and patient notification. It also needs Mohs surgery records, procedure coding by lesion, and enrollment checks for drugs dispensed under FDA REMS programs such as iPLEDGE.
A general EMR can record a skin exam as text. What it usually cannot do is tell the clinician that the lesion on the left upper back photographed today is the same one biopsied two years ago, and show the two images side by side.
That link between a lesion, its images and its pathology is the core of a dermatology record. Most other features depend on it.
How should lesions and body maps be modeled?
Each lesion should be its own record, with an identifier that stays the same across visits, rather than a sentence in a note. The body map is the interface; the lesion record is the data.
- Identity: a lesion number unique within the patient, with a status history such as new, monitored, biopsied, treated or resolved.
- Site: a coded anatomic location and laterality, ideally from SNOMED CT body structure concepts, plus map coordinates for display.
- Description: morphology, size and color recorded as structured fields, with free text for anything the fields miss.
- Images: every clinical photo and dermoscopy image linked to the lesion and the visit, never only to the patient.
- Procedures: each biopsy, destruction or excision linked to the lesion it treated, so codes and pathology follow the right site.
Coordinates alone are not enough. Body map graphics differ between products and versions, so a lesion stored only as a dot at a screen position may land somewhere else after an upgrade or a migration. The coded site is what survives.
Follow-up intervals belong on the lesion too. A monitored lesion carries its own next-review date, so a full skin check can open with the lesions due for comparison instead of a blank map.
Lesion identity also protects billing. Biopsy, destruction and excision codes are reported per lesion, and correct coding edits treat procedures on different lesions differently from procedures on the same one.
Which imaging standards apply to skin photographs?
DICOM now covers dermoscopy directly. DICOM Supplement 221, published as final text in December 2020, adds an information object and storage SOP class for dermoscopic images, so they can be stored and exchanged with the same metadata discipline as radiology images.
- Dermoscopy: covered by DICOM Supplement 221, which gives dermoscopic photographs their own information object instead of a generic photo type.
- Confocal microscopy: DICOM Supplement 226 for cutaneous confocal microscopy was published as final text in November 2023.
- Total body photography: DICOM Working Group 19 (Dermatology) has 2D and 3D total body photography supplements in progress, so check their status before designing a mapping program around them.
- Clinical photos: many practices still keep phone or camera images as JPEG files in a vendor gallery, with metadata held in the EMR database rather than in the file.
Whatever format is used, the record should capture the date, the device, the view and whether polarized light was used, and link each image to a lesion. Without those fields, comparing two images taken a year apart becomes guesswork.
Side-by-side comparison is what lesion links make possible. It only works when images share a view label and a scale reference, which is why those fields have to be captured when the photo is taken, not added later by someone guessing from the file name.
Storage volume grows quickly with total body photography. Plan image storage, retention and backup as a separate workload from the clinical database, with its own access logs.
How does the biopsy to pathology loop close?
The loop closes only when the signed pathology result is filed against the right lesion and the patient has been told. Every step between the specimen jar and that conversation needs an owner in the software.
- 1. Order: create one specimen per lesion, with a label carrying the patient, lesion number and site, and send the order to the dermatopathology lab over an HL7 v2 order interface or the lab's portal.
- 2. Tracking: list every specimen sent and not yet resulted, by date, so a lost jar shows up as an overdue item.
- 3. Result: receive the signed report over an HL7 v2 ORU interface, match it on the specimen identifier, and file the diagnosis against the lesion.
- 4. Review: route the result to the ordering clinician, who decides on treatment or follow-up.
- 5. Notification: record when and how the patient was told, and schedule any re-excision or Mohs referral.
Patient portals add a timing question. Under 45 CFR Part 171, holding back or delaying a patient's access to electronic health information may count as information blocking by a provider unless one of the exceptions covers it, so a practice that holds pathology results back for review should base that policy on an exception, such as preventing harm, and document it.
Pathology reports often carry margin status and a diagnosis that changes the plan, such as a melanoma that needs staging or re-excision. Storing the diagnosis and margin status as coded fields, next to the full report, lets the practice list every patient with a positive margin or a pending re-excision.
What Mohs and procedure records need
Mohs micrographic surgery records need stage-by-stage data, because the surgeon acts as both surgeon and pathologist and the codes count stages and tissue blocks. Mohs is reported with CPT 17311 to 17315, split by anatomic area, first stage and additional stages, and additional blocks.
- Stage map: a drawing or coded map for each stage showing where tissue was taken and where margins remained positive.
- Blocks: the number of tissue blocks per stage, which drives the add-on codes.
- Repair: the closure type and size, recorded separately because wound repair codes may be reported with Mohs.
- Bundling: the Medicaid NCCI policy manual states that Mohs codes include skin biopsy and excision services (CPT 11102 to 11107, 11600 to 11646 and 17260 to 17286) and certain pathology services, so separate biopsy reporting needs documentation that the conditions for it were met.
The biopsy codes themselves changed in 2019 to separate tangential, punch and incisional techniques. A procedure note template that asks for the technique, rather than a generic biopsy line, keeps coding and documentation in step.
Which drug and privacy rules touch the record?
Two rules shape dermatology records more than most specialties: the isotretinoin REMS and the HIPAA treatment of facial photographs.
- iPLEDGE REMS: FDA requires prescribers and pharmacies to be registered with iPLEDGE to prescribe and dispense isotretinoin, and patients must be enrolled and agree to the program's requirements. FDA approved changes to the iPLEDGE REMS on 9 February 2026, so check the current requirements before building monitoring workflows.
- Facial photographs: full-face photographs and comparable images are one of the identifiers that must be removed for de-identification under the HIPAA Safe Harbor method (45 CFR 164.514(b)(2)).
- Patient-sent images: photos patients upload through a portal or teledermatology app become part of the record once the practice receives them, and need the same Security Rule safeguards as images taken in clinic.
In practice, isotretinoin monitoring means the EMR tracks registration status, required tests and prescription dates for each patient on therapy, and shows when the next action is due. Rather than duplicate the REMS system, the record should hold a reference to it and the dates the clinic is responsible for.
For photographs, the safest design keeps images inside the record system from capture to storage. Staff phones that keep a copy in a personal camera roll are a common failure point.
Where dermatology systems fall short
- Lesions as text only: the clinician cannot see that today's lesion is the one biopsied before, and comparison photos are hunted by date.
- Images linked to the patient, not the lesion: a patient with many monitored lesions ends up with an unsorted gallery.
- No unresulted specimen list: a lost or delayed biopsy is noticed only when the patient calls.
- Body map coordinates without coded sites: lesion locations shift after an upgrade or a migration.
- Mohs stages in free text: stage and block counts are rebuilt by billing staff from the narrative.
- Photos on personal devices: copies of patient images sit outside the practice's safeguards.
How Agnotic can help
Dermatology practices usually have an EMR already. What they lack is the lesion, image and pathology layer that turns it into a skin practice record. Agnotic Technologies adds that layer for the client: lesion registries and body maps with coded sites, image capture and storage that keeps photos inside the practice's systems, and pathology order and result interfaces that close the loop.
Agnotic also builds Mohs stage documentation, procedure coding support by lesion and the integrations that connect these modules to the practice's existing EMR.
Plan dermatology EMR work with Agnotic
See dermatology software development, or read more specialty record articles in the EHR integration hub.
Related reading on Agnotic
Continue with HL7 orders and results, EHR integrations, medical imaging and other specialty record guides.
