T59.814D — Toxic effect of smoke, undetermined, subsequent encounter
Is T59.814D billable?
Yes — T59.814D is billable for FY2027. T59.814D is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T59.814D may be submitted for encounters from October 1, 2026 through September 30, 2027.
T59.814D at a glance
| Code | T59.814D |
|---|---|
| Description | Toxic effect of smoke, undetermined, 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 T59.814D?
In T59.814D, the 7th character D means subsequent encounter. The 7th character is required for T59.814D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T59.814D group to?
T59.814D 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
How is T59.814D listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T59.81, the nearest indexed parent of T59.814D. Use them to find the family, then select the specific code.
- Inhalation › smoke
Excludes1 — never code together — inherited from T51-T65
The conditions below can never be reported together with T59.814D on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- contact with and (suspected) exposure to toxic substances (Z77.-)
Excludes1 — never code together — inherited from T59
The conditions below can never be reported together with T59.814D on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- chlorofluorocarbons (T53.5)
Use additional code — inherited from Chapter 19
Report an additional code alongside T59.814D to fully describe the condition. T59.814D is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T51-T65
Report an additional code alongside T59.814D to fully describe the condition. T59.814D is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T59.814D, but a patient may have both at the same time. When documentation supports it, T59.814D and the excluded code may both be reported.
Excludes2 — not included here — inherited from T59.81
The conditions below are not part of T59.814D, but a patient may have both at the same time. When documentation supports it, T59.814D and the excluded code may both be reported.
- toxic effect of cigarette (tobacco) smoke (T65.22-)
How long has T59.814D existed?
T59.814D 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.