D5999 — Unspecified Maxillofacial prosthetics Procedure (By Report)
D5999 is the by-report code used when a maxillofacial prosthetics procedure does not match any specific code in the set, and must be described in a written narrative.
D5999 is the by-report code that closes the maxillofacial prosthetics section of the code set. It is reported when unusual maxillofacial prosthetic work was genuinely performed but no specific code in that section describes it.
Nothing about the procedure is built into the code, so nothing about it can be assumed. The narrative filed with the claim is the whole of the description, and the standard it is held to is particular to this part of the code set.
What actually gets billed under D5999
Maxillofacial prosthetics is the section where by-report use is most routine, because almost every appliance is unique to one patient. Claims here cover prostheses for defects created by cancer surgery or trauma, radiation-positioning devices, feeding appliances for infants, and combinations of prosthesis and obturator that no single code describes. The work is usually part of a hospital-based treatment plan.
What a reviewer of a maxillofacial prosthetics claim is looking for
These claims are frequently assessed under medical rather than dental benefits, which changes who needs to see the narrative. It should name the diagnosis and the defect, reference the surgical or oncological treatment that caused it, and be supported by the referring specialist's letter. Coordination of benefits between the medical and dental plans is usually the practical obstacle rather than the merits of the claim.
If this code is on your treatment plan
Get the procedure described in plain language, get the fee in writing, and get an estimate submitted to your plan before the work starts. Unusual maxillofacial prosthetics work is frequently the expensive kind, and this is the one code where neither you nor the practice can look up what a plan will allow. The code itself is legitimate — the uncertainty is what needs managing.
Questions about D5999
What does D5999 mean on my dental bill?
It is the by-report code for unusual maxillofacial prosthetic work that no specific maxillofacial prosthetics code describes. It has no fixed fee, so the narrative filed with the claim is what explains what was done.
What kind of maxillofacial prosthetics work ends up under this code?
Maxillofacial prosthetics is the section where by-report use is most routine, because almost every appliance is unique to one patient.
Will my plan pay a claim submitted under D5999?
It depends on the documentation rather than on the code. These claims are frequently assessed under medical rather than dental benefits, which changes who needs to see the narrative.
Is there a way to know the cost of D5999 in advance?
Only by pre-treatment estimate. Ask the practice to submit the narrative to your insurer before treatment; the answer comes back as a number rather than a range.
Also known as: by report, unspecified procedure, narrative required, pre-treatment estimate.