T88.0 Infection following immunization

The ICD-10-CM code for Infection following immunization is T88.0 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

19: Injury, poisoning and certain other consequences of external causes (S00-T88)

Section

T80-T88: Complications of surgical and medical care, not elsewhere classified (T80-T88)

Category T88

15 codes (13 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to T88.0:

• Infection, infected, infective (opportunistic) › postvaccinal
• Pyemia, pyemic (fever) (infection) (purulent) › postvaccinal
• Infection, infected, infective (opportunistic) › vaccination
• Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) › vaccinal
• Complication (s) (from) (of) › vaccination › sepsis
• Complication (s) (from) (of) › vaccination › infection (general) (local) NEC
• Complication (s) (from) (of) › vaccination › cellulitis
• Infection, infected, infective (opportunistic) › due to or resulting from › immunization or vaccination

Inclusion Terms

• Sepsis following immunization

Official Coding Guidelines

Infections after infusion/transfusion/injection/immunization with sepsis

For infections following infusion, transfusion, therapeutic injection, or immunization, a code from subcategory T80.2, Infections following infusion, transfusion, and therapeutic injection, or code T88.0-, Infection following immunization, should be coded first, followed by the code for the specific infection. If the patient has severe sepsis, the appropriate code from subcategory R65.2 should also be assigned, with the additional codes(s) for any acute organ dysfunction.

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool