T43.606D — Underdosing of unspecified psychostimulants, subsequent encounter
Is T43.606D billable?
Yes, but T43.606D is an unspecified code. T43.606D is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T43.606D 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 T43.606D — the more specific alternatives are listed below.
More specific alternatives
- T43.611DPoisoning by caffeine, accidental (unintentional), subsequent encounter
- T43.621DPoisoning by amphetamines, accidental (unintentional), subsequent encounter
- T43.631DPoisoning by methylphenidate, accidental (unintentional), subsequent encounter
- T43.641DPoisoning by ecstasy, accidental (unintentional), subsequent encounter
- T43.651DPoisoning by methamphetamines accidental (unintentional), subsequent encounter
- T43.691DPoisoning by other psychostimulants, accidental (unintentional), subsequent encounter
T43.606D at a glance
| Code | T43.606D |
|---|---|
| Description | Underdosing of unspecified psychostimulants, 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 T43.606D?
In T43.606D, the 7th character D means subsequent encounter. The 7th character is required for T43.606D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
What Medicare edits apply to T43.606D?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name T43.606D 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 T43.606D group to?
T43.606D 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 T43.606D 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 T43.6
The conditions below can never be reported together with T43.606D 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 cocaine (T40.5-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T43.606D. T43.606D describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T43.606D to fully describe the condition. T43.606D 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 T43.606D to fully describe the condition. T43.606D is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T43.606D, but a patient may have both at the same time. When documentation supports it, T43.606D and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T43.606D, but a patient may have both at the same time. When documentation supports it, T43.606D and the excluded code may both be reported.
Excludes2 — not included here — inherited from T43
The conditions below are not part of T43.606D, but a patient may have both at the same time. When documentation supports it, T43.606D and the excluded code may both be reported.
How long has T43.606D existed?
T43.606D 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.