2027 ICD-10-CM Diagnosis Code T16.1XXSForeign body in right ear, sequela
T16.1XXS is a billable ICD-10-CM diagnosis code for foreign body in right ear, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 913 through 914. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
T16.1XXS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Effects of foreign body entering through natural orifice (T15-T19).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Foreign body in auditory canal
- Foreign body in auricle
- Foreign body in left ear
- Foreign body in middle ear
- Foreign body in right auditory canal
- Foreign body in right auricle
- Foreign body in right ear
- Foreign body in right external ear
- Retained foreign body of bilateral middle ears
- Retained foreign body of left middle ear
- Retained foreign body of middle ear
- Retained foreign body of right middle ear
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Foreign body in ear (T16). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to T16.1XXS: its own notes plus those printed at T16, block T15-T19, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- foreign body in auditory canal
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code, if known, for foreign body entering into or through a natural orifice (W44.-)
- code to identify any retained foreign body, if applicable (Z18.-)
Notes
General instructions on how these codes are used.
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
7th Character
Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.
- The appropriate 7th character is to be added to each code from category T16
- Ainitial encounter
- Dsubsequent encounter
- Ssequela this code
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name T16.1XXS, its category, or a range that includes it.
Excludes2 2
These codes carry an Excludes2 note naming T16.1XXS: its condition is not part of those codes, and both may be reported when the patient has both.
- Block S00-S09 Injuries to the headeffects of foreign body in ear (T16) names T16, which includes this code
- Z03.82 Encounter for observation for suspected foreign body ruled outforeign body in ear (T16) names T16, which includes this code
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Foreign Bodies
If you've ever gotten a splinter or had sand in your eye, you've had experience with a foreign body. A foreign body is something that is stuck inside you but isn't supposed to be there. You may inhale or swallow a foreign body, or you may get one from an injury to almost any part of your body.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert T16.1XXS to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T16.1XXSOverview
What is the ICD-10 code for foreign body in right ear, sequela?
The ICD-10-CM code for foreign body in right ear, sequela is T16.1XXS (sometimes written as T161XXS). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is T16.1XXS (Foreign body in right ear) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report foreign body in right ear, sequela on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What does the 7th character S in T16.1XXS mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the foreign body in right ear itself has resolved, not the original event.
What MS-DRG does T16.1XXS group to?
When foreign body in right ear, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 914, 913, with relative weights from 0.9281 to 1.5448 depending on complications. Higher weights mean higher Medicare reimbursement.
Is T16.1XXS exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for foreign body in right ear, sequela on inpatient claims. The code appears in the Effects of foreign body entering through natural orifice (T15-T19) range of the CMS exempt list.
