T46.905D — Adverse effect of unspecified agents primarily affecting the cardiovascular system, subsequent encounter
Is T46.905D billable?
Yes, but T46.905D is an unspecified code. T46.905D is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T46.905D 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 T46.905D — the more specific alternatives are listed below.
More specific alternatives
- T46.0X1DPoisoning by cardiac-stimulant glycosides and drugs of similar action, accidental (unintentional), subsequent encounter
- T46.1X1DPoisoning by calcium-channel blockers, accidental (unintentional), subsequent encounter
- T46.3X1DPoisoning by coronary vasodilators, accidental (unintentional), subsequent encounter
- T46.4X1DPoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), subsequent encounter
- T46.5X1DPoisoning by other antihypertensive drugs, accidental (unintentional), subsequent encounter
- T46.6X1DPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, accidental (unintentional), subsequent encounter
- T46.7X1DPoisoning by peripheral vasodilators, accidental (unintentional), subsequent encounter
- T46.8X1DPoisoning by antivaricose drugs, including sclerosing agents, accidental (unintentional), subsequent encounter
T46.905D at a glance
| Code | T46.905D |
|---|---|
| Description | Adverse effect of unspecified agents primarily affecting the cardiovascular system, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in T46.905D?
In T46.905D, the 7th character D means subsequent encounter. The 7th character is required for T46.905D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
What Medicare edits apply to T46.905D?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name T46.905D 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 T46.905D group to?
T46.905D sits in MDC 23 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 949Aftercare with CC/MCCmedical
- 950Aftercare without CC/MCCmedical
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T46.905D 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-)
Excludes1 — never code together — inherited from T46
The conditions below can never be reported together with T46.905D on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- poisoning by, adverse effect of and underdosing of metaraminol (T44.4)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T46.905D. T46.905D describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T46.905D to fully describe the condition. T46.905D 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 T46.905D to fully describe the condition. T46.905D is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T46.905D, but a patient may have both at the same time. When documentation supports it, T46.905D and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T46.905D, but a patient may have both at the same time. When documentation supports it, T46.905D and the excluded code may both be reported.
How long has T46.905D existed?
T46.905D 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.