Coding and coverage · ICD-10-CM
T50.B9 Poisoning by, adverse effect of and underdosing of other viral vaccines
This code needs a 7th character (use X as a placeholder for missing characters).
Codes under this one
- T50.B91 Poisoning by other viral vaccines, accidental (unintentional)Header
- T50.B92 Poisoning by other viral vaccines, intentional self-harmHeader
- T50.B93 Poisoning by other viral vaccines, assaultHeader
- T50.B94 Poisoning by other viral vaccines, undeterminedHeader
- T50.B95 Adverse effect of other viral vaccinesHeader
- T50.B96 Underdosing of other viral vaccinesHeader
Instructional notes
Chapter 19
Excludes2Not included here: the patient may have both; report both when both are present.
Use additional codeAdd a second code for the full picture.
- code to identify any retained foreign body, if applicable (Z18.-)
Notes
- 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.
T50
7th charactersThe appropriate 7th character is to be added to each code from category T50
- A initial encounter
- D subsequent encounter
- S sequela
Chapter 19: Injury, poisoning and certain other consequences of external causes · T07-T88 Injury, poisoning and certain other consequences of external causes (T07-T88)
Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.
Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.