T36 — Poisoning by, adverse effect of and underdosing of systemic antibiotics
Not billable
Is T36 billable?
No — T36 is a non-billable header code. T36 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 60 billable codes beneath T36.
Billable codes under this header
- T36.91XAPoisoning by unspecified systemic antibiotic, accidental (unintentional), initial encounter
- T36.91XDPoisoning by unspecified systemic antibiotic, accidental (unintentional), subsequent encounter
- T36.91XSPoisoning by unspecified systemic antibiotic, accidental (unintentional), sequela
- T36.92XAPoisoning by unspecified systemic antibiotic, intentional self-harm, initial encounter
- T36.92XDPoisoning by unspecified systemic antibiotic, intentional self-harm, subsequent encounter
- T36.92XSPoisoning by unspecified systemic antibiotic, intentional self-harm, sequela
- T36.93XAPoisoning by unspecified systemic antibiotic, assault, initial encounter
- T36.93XDPoisoning by unspecified systemic antibiotic, assault, subsequent encounter
- T36.93XSPoisoning by unspecified systemic antibiotic, assault, sequela
- T36.94XAPoisoning by unspecified systemic antibiotic, undetermined, initial encounter
- T36.94XDPoisoning by unspecified systemic antibiotic, undetermined, subsequent encounter
- T36.94XSPoisoning by unspecified systemic antibiotic, undetermined, sequela
- T36.95XAAdverse effect of unspecified systemic antibiotic, initial encounter
- T36.95XDAdverse effect of unspecified systemic antibiotic, subsequent encounter
- T36.95XSAdverse effect of unspecified systemic antibiotic, sequela
- T36.96XAUnderdosing of unspecified systemic antibiotic, initial encounter
- T36.96XDUnderdosing of unspecified systemic antibiotic, subsequent encounter
- T36.96XSUnderdosing of unspecified systemic antibiotic, sequela
- T36.0X1APoisoning by penicillins, accidental (unintentional), initial encounter
- T36.0X1DPoisoning by penicillins, accidental (unintentional), subsequent encounter
- T36.0X1SPoisoning by penicillins, accidental (unintentional), sequela
- T36.0X2APoisoning by penicillins, intentional self-harm, initial encounter
- T36.0X2DPoisoning by penicillins, intentional self-harm, subsequent encounter
- T36.0X2SPoisoning by penicillins, intentional self-harm, sequela
- T36.0X3APoisoning by penicillins, assault, initial encounter
- T36.0X3DPoisoning by penicillins, assault, subsequent encounter
- T36.0X3SPoisoning by penicillins, assault, sequela
- T36.0X4APoisoning by penicillins, undetermined, initial encounter
- T36.0X4DPoisoning by penicillins, undetermined, subsequent encounter
- T36.0X4SPoisoning by penicillins, undetermined, sequela
- T36.0X5AAdverse effect of penicillins, initial encounter
- T36.0X5DAdverse effect of penicillins, subsequent encounter
- T36.0X5SAdverse effect of penicillins, sequela
- T36.0X6AUnderdosing of penicillins, initial encounter
- T36.0X6DUnderdosing of penicillins, subsequent encounter
- T36.0X6SUnderdosing of penicillins, sequela
- T36.1X1APoisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), initial encounter
- T36.1X1DPoisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), subsequent encounter
- T36.1X1SPoisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), sequela
- T36.1X2APoisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, initial encounter
- T36.1X2DPoisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, subsequent encounter
- T36.1X2SPoisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, sequela
- T36.1X3APoisoning by cephalosporins and other beta-lactam antibiotics, assault, initial encounter
- T36.1X3DPoisoning by cephalosporins and other beta-lactam antibiotics, assault, subsequent encounter
- T36.1X3SPoisoning by cephalosporins and other beta-lactam antibiotics, assault, sequela
- T36.1X4APoisoning by cephalosporins and other beta-lactam antibiotics, undetermined, initial encounter
- T36.1X4DPoisoning by cephalosporins and other beta-lactam antibiotics, undetermined, subsequent encounter
- T36.1X4SPoisoning by cephalosporins and other beta-lactam antibiotics, undetermined, sequela
- T36.1X5AAdverse effect of cephalosporins and other beta-lactam antibiotics, initial encounter
- T36.1X5DAdverse effect of cephalosporins and other beta-lactam antibiotics, subsequent encounter
- T36.1X5SAdverse effect of cephalosporins and other beta-lactam antibiotics, sequela
- T36.1X6AUnderdosing of cephalosporins and other beta-lactam antibiotics, initial encounter
- T36.1X6DUnderdosing of cephalosporins and other beta-lactam antibiotics, subsequent encounter
- T36.1X6SUnderdosing of cephalosporins and other beta-lactam antibiotics, sequela
- T36.2X1APoisoning by chloramphenicol group, accidental (unintentional), initial encounter
- T36.2X1DPoisoning by chloramphenicol group, accidental (unintentional), subsequent encounter
- T36.2X1SPoisoning by chloramphenicol group, accidental (unintentional), sequela
- T36.2X2APoisoning by chloramphenicol group, intentional self-harm, initial encounter
- T36.2X2DPoisoning by chloramphenicol group, intentional self-harm, subsequent encounter
- T36.2X2SPoisoning by chloramphenicol group, intentional self-harm, sequela
T36 at a glance
| Code | T36 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of systemic antibiotics |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with T36 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T36 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T36. T36 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T36 to fully describe the condition. T36 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T36 to fully describe the condition. T36 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T36, but a patient may have both at the same time. When documentation supports it, T36 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T36, but a patient may have both at the same time. When documentation supports it, T36 and the excluded code may both be reported.
What codes fall under T36? (11)
- T36.0Poisoning by, adverse effect of and underdosing of penicillinsnot billable
- T36.1Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibioticsnot billable
- T36.2Poisoning by, adverse effect of and underdosing of chloramphenicol groupnot billable
- T36.3Poisoning by, adverse effect of and underdosing of macrolidesnot billable
- T36.4Poisoning by, adverse effect of and underdosing of tetracyclinesnot billable
- T36.5Poisoning by, adverse effect of and underdosing of aminoglycosidesnot billable
- T36.6Poisoning by, adverse effect of and underdosing of rifampicinsnot billable
- T36.7Poisoning by, adverse effect of and underdosing of antifungal antibiotics, systemically usednot billable
- T36.8Poisoning by, adverse effect of and underdosing of other systemic antibioticsnot billable
- T36.9Poisoning by, adverse effect of and underdosing of unspecified systemic antibioticnot billable
- T36.APoisoning by, adverse effect of and underdosing of fluoroquinolone antibioticsnot billable
How long has T36 existed?
T36 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.