L23.3 (Allergic contact dermatitis due to drugs in contact with skin) compared with T81.83XA (Persistent postprocedural fistula, initial encounter), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Distinct conditions — both may be reported.
“dermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)”
An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.
Source: CMS ICD-10-CM tabular instructional notes
Yes, when both are documented. T81.83XA carries an Excludes2 note covering L23.3: “dermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
| L23.3Allergic contact dermatitis due to drugs in contact with skin | T81.83XAPersistent postprocedural fistula, initial encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Allergic contact dermatitis due to drugs in contact with skin is a billable ICD-10-CM diagnosis code (L23.3). | Persistent postprocedural fistula, initial encounter is a billable ICD-10-CM diagnosis code (T81.83A). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T81 |
| Use additional code | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) | code, if known, for site of fistula such as: anal fistula (K60.3-) anorectal fistula (K60.5-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources