T49.96XA — Underdosing of unspecified topical agent, initial encounter
Is T49.96XA billable?
Yes, but T49.96XA is an unspecified code. T49.96XA is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T49.96XA is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T49.96XA — the more specific alternatives are listed below.
More specific alternatives
- T49.0X1APoisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional), initial encounter
- T49.1X1APoisoning by antipruritics, accidental (unintentional), initial encounter
- T49.2X1APoisoning by local astringents and local detergents, accidental (unintentional), initial encounter
- T49.3X1APoisoning by emollients, demulcents and protectants, accidental (unintentional), initial encounter
- T49.4X1APoisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, accidental (unintentional), initial encounter
- T49.5X1APoisoning by ophthalmological drugs and preparations, accidental (unintentional), initial encounter
- T49.6X1APoisoning by otorhinolaryngological drugs and preparations, accidental (unintentional), initial encounter
- T49.7X1APoisoning by dental drugs, topically applied, accidental (unintentional), initial encounter
- T49.8X1APoisoning by other topical agents, accidental (unintentional), initial encounter
T49.96XA at a glance
| Code | T49.96XA |
|---|---|
| Description | Underdosing of unspecified topical agent, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in T49.96XA?
In T49.96XA, the 7th character A means initial encounter. The 7th character is required for T49.96XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
What Medicare edits apply to T49.96XA?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name T49.96XA directly.
CMS will reject this code as the principal diagnosis on an inpatient claim. It describes something other than the condition chiefly responsible for the admission.
Which MS-DRGs does T49.96XA group to?
T49.96XA sits in MDC 23 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 951Other Factors Influencing Health Statusmedical
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T49.96XA on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T49.96XA. T49.96XA describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T49.96XA to fully describe the condition. T49.96XA is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T49.96XA to fully describe the condition. T49.96XA is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T49.96XA, but a patient may have both at the same time. When documentation supports it, T49.96XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T49.96XA, but a patient may have both at the same time. When documentation supports it, T49.96XA and the excluded code may both be reported.
How long has T49.96XA existed?
T49.96XA has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.