Other complications of surgical and medical care, not elsewhere classified (T88) ICD-10-CM
The T88 code range covers other complications of surgical and medical care, not elsewhere classified with 54 ICD-10-CM diagnosis codes. 39 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- complication following infusion, transfusion and therapeutic injection T80
- complication following procedure NEC T81
- complications of anesthesia in labor and delivery O74
- complications of anesthesia in pregnancy O29
- complications of anesthesia in puerperium O89
- complications of devices, implants and grafts T82 T85
- complications of obstetric surgery and procedure O75.4
- dermatitis due to drugs and medicaments L23.3 L24.4 L25.1 L27.0 L27.1
- poisoning and toxic effects of drugs and chemicals T36 T65
- specified complications classified elsewhere
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category T88
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the T88 Range 54 codes · 39 billable
- T88 Other complications of surgical and medical care, not elsewhere classifiedNon-billable
- T88.0 Infection following immunizationNon-billable
- T88.0XXA Infection following immunization, initial encounter
- T88.0XXD Infection following immunization, subsequent encounter
- T88.0XXS Infection following immunization, sequela
- T88.1 Other complications following immunization, not elsewhere classifiedNon-billable
- T88.1XXA Other complications following immunization, not elsewhere classified, initial encounter
- T88.1XXD Other complications following immunization, not elsewhere classified, subsequent encounter
- T88.1XXS Other complications following immunization, not elsewhere classified, sequela
- T88.2 Shock due to anesthesiaNon-billable
- T88.2XXA Shock due to anesthesia, initial encounter
- T88.2XXD Shock due to anesthesia, subsequent encounter
- T88.2XXS Shock due to anesthesia, sequela
- T88.3 Malignant hyperthermia due to anesthesiaNon-billable
- T88.3XXA Malignant hyperthermia due to anesthesia, initial encounter
- T88.3XXD Malignant hyperthermia due to anesthesia, subsequent encounter
- T88.3XXS Malignant hyperthermia due to anesthesia, sequela
- T88.4 Failed or difficult intubationNon-billable
- T88.4XXA Failed or difficult intubation, initial encounter
- T88.4XXD Failed or difficult intubation, subsequent encounter
- T88.4XXS Failed or difficult intubation, sequela
- T88.5 Other complications of anesthesiaNon-billable
- T88.51 Hypothermia following anesthesiaNon-billable
- T88.51XA Hypothermia following anesthesia, initial encounter
- T88.51XD Hypothermia following anesthesia, subsequent encounter
- T88.51XS Hypothermia following anesthesia, sequela
- T88.52 Failed moderate sedation during procedureNon-billable
- T88.52XA Failed moderate sedation during procedure, initial encounter
- T88.52XD Failed moderate sedation during procedure, subsequent encounter
- T88.52XS Failed moderate sedation during procedure, sequela
- T88.53 Unintended awareness under general anesthesia during procedureNon-billable
- T88.53XA Unintended awareness under general anesthesia during procedure, initial encounter
- T88.53XD Unintended awareness under general anesthesia during procedure, subsequent encounter
- T88.53XS Unintended awareness under general anesthesia during procedure, sequela
- T88.59 Other complications of anesthesiaNon-billable
- T88.59XA Other complications of anesthesia, initial encounter
- T88.59XD Other complications of anesthesia, subsequent encounter
- T88.59XS Other complications of anesthesia, sequela
- T88.6 Anaphylactic reaction due to adverse effect of correct drug or medicament properly administeredNon-billable
- T88.6XXA Anaphylactic reaction due to adverse effect of correct drug or medicament properly administered, initial encounter
- T88.6XXD Anaphylactic reaction due to adverse effect of correct drug or medicament properly administered, subsequent encounter
- T88.6XXS Anaphylactic reaction due to adverse effect of correct drug or medicament properly administered, sequela
- T88.7 Unspecified adverse effect of drug or medicamentNon-billable
- T88.7XXA Unspecified adverse effect of drug or medicament, initial encounter
- T88.7XXD Unspecified adverse effect of drug or medicament, subsequent encounter
- T88.7XXS Unspecified adverse effect of drug or medicament, sequela
- T88.8 Other specified complications of surgical and medical care, not elsewhere classifiedNon-billable
- T88.8XXA Other specified complications of surgical and medical care, not elsewhere classified, initial encounter
- T88.8XXD Other specified complications of surgical and medical care, not elsewhere classified, subsequent encounter
- T88.8XXS Other specified complications of surgical and medical care, not elsewhere classified, sequela
- T88.9 Complication of surgical and medical care, unspecifiedNon-billable
- T88.9XXA Complication of surgical and medical care, unspecified, initial encounter
- T88.9XXD Complication of surgical and medical care, unspecified, subsequent encounter
- T88.9XXS Complication of surgical and medical care, unspecified, sequela
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the T88 range.
Dermatofibrosarcoma
A sarcoma of the deep layers of the skin. The tumors are locally aggressive tends to recur but rarely metastatic. It can be classified into variants depending on the cell type tumors are derived from or by its characteristics: Pigmented variant from MELANIN-containing DERMAL DENDRITIC CELLS; Myxoid variant, myxoid STROMAL CELLS; Giant cell variant characterized by GIANT CELLS in the tumors; and Fibrosarcomatous variant chracterized by tumor areas histologically indistinguishable from FIBROSARCOMA.
Dual Specificity Phosphatase 3
A dual specificity phosphatase subtype that plays a role in intracellular signal transduction by inactivating MITOGEN-ACTIVATED PROTEIN KINASES. It has specificity for EXTRACELLULAR SIGNAL-REGULATED MAP KINASES.
Fibrosarcoma
A sarcoma derived from deep fibrous tissue, characterized by bundles of immature proliferating fibroblasts with variable collagen formation, which tends to invade locally and metastasize by the bloodstream. (Stedman, 25th ed)
Malignant Hyperthermia
Rapid and excessive rise of temperature accompanied by muscular rigidity following general anesthesia.
Smallpox Vaccine
A VACCINIA VIRUS vaccine used for immunization against SMALLPOX. It is now recommended only for laboratory workers exposed to SMALLPOX VIRUS. Certain countries continue to vaccinate those in the military service. Rare complications most often associated with older generation smallpox vaccines include VACCINIA, secondary bacterial infections, and ENCEPHALOMYELITIS. Because MONKEYPOX VIRUS and SMALLPOX VIRUS are both ORTHOPOXVIRUS and are closely related smallpox vaccines provide effective CROSS-PROTECTION against MPOX, MONKEYPOX (https://www.cdc.gov/poxvirus/monkeypox/clinicians/smallpox-vaccine.html).
Vaccinia
The cutaneous and occasional systemic reactions associated with vaccination using smallpox (variola) vaccine.
Vaccinia virus
The type species of ORTHOPOXVIRUS, related to COWPOX VIRUS, but whose true origin is unknown. It has been used as a live vaccine against SMALLPOX. It is also used as a vector for inserting foreign DNA into animals. Rabbitpox virus is a subspecies of VACCINIA VIRUS.
About the T88 Code Range
ICD-10 code section T88 covers a variety of other complications of surgical and medical care not classified elsewhere. This includes issues following immunization, anesthesia-related problems, adverse drug reactions, and unspecified complications during or after medical treatment.
The codes under T88 are used to document specific complications such as infections following immunizations—including SARS-CoV-2 breakthrough infections and sepsis—as well as other immunization complications like vaccinia or eczema vaccinatum. Anesthesia complications include shock (T88.2), malignant hyperthermia (T88.3), failed or difficult intubation (T88.4), hypothermia following anesthesia (T88.51), and unintended awareness during general anesthesia (T88.53). Additionally, anaphylactic reactions to properly administered drugs (T88.6) and unspecified or other specified adverse effects from medications or medical procedures (T88.7, T88.8, T88.9) are coded here. These codes assist medical coders in identifying the cause and nature of complications to support accurate clinical documentation and treatment tracking.
For example, the ICD-10 code for infection following immunization (T88.0) includes synonyms like “COVID-19” or “sepsis following vaccination,” helping clarify related diagnoses. Similarly, T88.6 codes specify anaphylaxis caused by drugs such as penicillin, NSAIDs, or radiographic contrast media. Understanding these codes guides professionals in pinpointing the source of complications after medical or surgical care for proper billing, care strategies, and improved patient safety.
Questions About This Page
How many billable codes are in the T88 range?
Of the 54 codes in this range, 39 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the T88 range classify?
The range classifies other complications of surgical and medical care, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
