ICD-10-CM diagnosis code
T88.3XXS Malignant hyperthermia due to anesthesia, sequela
- Billable
- Yes, a complete code (FY2026)
Encounter (7th character)
This code is for a sequela: a complication or condition that arises as a direct result of the injury. The sequela itself is usually coded first, followed by this code.
Documenting T88.3XXS? Write the note in seconds
Paste your rough notes and get a structured SOAP note. Free, no account needed.
Other codes in T88
39 complete codes in this category.
- T88.1XXSOther complications following immunization, not elsewhere classified, sequela
- T88.2XXAShock due to anesthesia, initial encounter
- T88.2XXDShock due to anesthesia, subsequent encounter
- T88.2XXSShock due to anesthesia, sequela
- T88.3XXAMalignant hyperthermia due to anesthesia, initial encounter
- T88.3XXDMalignant hyperthermia due to anesthesia, subsequent encounter
- T88.3XXSMalignant hyperthermia due to anesthesia, sequela
- T88.4XXAFailed or difficult intubation, initial encounter
- T88.4XXDFailed or difficult intubation, subsequent encounter
- T88.4XXSFailed or difficult intubation, sequela
- T88.51XAHypothermia following anesthesia, initial encounter
- T88.51XDHypothermia following anesthesia, subsequent encounter
Documentation tips
- Make sure the note supports every element of the title, “Malignant hyperthermia due to anesthesia, sequela”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to T88.
The international WHO ICD-10 also has T88, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
Look up another code
Stop looking codes up by hand
Docdemic listens to the consultation, writes the note and suggests the diagnosis and procedure codes that fit it, each one checked against your country’s official code list.
Try Docdemic free