T18.0XXS — Foreign body in mouth, sequela
Is T18.0XXS billable?
Yes — T18.0XXS is billable for FY2027. T18.0XXS is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T18.0XXS may be submitted for encounters from October 1, 2026 through September 30, 2027.
T18.0XXS at a glance
| Code | T18.0XXS |
|---|---|
| Description | Foreign body in mouth, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in T18.0XXS?
In T18.0XXS, the 7th character S means sequela. The 7th character is required for T18.0XXS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T18.0XXS group to?
T18.0XXS sits in MDC 21 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.
- 913Traumatic Injury with MCCmedical
- 914Traumatic Injury without MCCmedical
How is T18.0XXS listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T18.0, the nearest indexed parent of T18.0XXS. Use them to find the family, then select the specific code.
- Foreign body › alimentary tract › mouth
- Foreign body › entering through orifice › alveolar process
- Foreign body › entering through orifice › buccal cavity
- Foreign body › entering through orifice › gum
- Foreign body › entering through orifice › mouth
- Foreign body › entering through orifice › oral cavity
- Foreign body › entering through orifice › palate
- Foreign body › entering through orifice › tongue
How is T18.0XXS listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under T18, the nearest indexed parent of T18.0XXS. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Aspiration › food
- Choked, choking › food (on) (any object except food or vomitus)
- Foodin › air passages (any type)
- Foodin › alimentary tract causing asphyxia (any type)
- Asphyxia, asphyxiation › by › food
- Compression › trachea by › food
Use additional code — inherited from Chapter 19
Report an additional code alongside T18.0XXS to fully describe the condition. T18.0XXS is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T15-T19
Report an additional code alongside T18.0XXS to fully describe the condition. T18.0XXS is sequenced first.
- code, if known, for foreign body entering into or through a natural orifice (W44.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T18.0XXS, but a patient may have both at the same time. When documentation supports it, T18.0XXS and the excluded code may both be reported.
Excludes2 — not included here — inherited from T15-T19
The conditions below are not part of T18.0XXS, but a patient may have both at the same time. When documentation supports it, T18.0XXS and the excluded code may both be reported.
Excludes2 — not included here — inherited from T18
The conditions below are not part of T18.0XXS, but a patient may have both at the same time. When documentation supports it, T18.0XXS and the excluded code may both be reported.
- foreign body in pharynx (T17.2-)
How long has T18.0XXS existed?
T18.0XXS 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.