2026 ICD-10-CM Diagnosis Code T65.893SToxic effect of other specified substances, assault, sequela
T65.893S is a billable ICD-10-CM diagnosis code for toxic effect of other specified substances, assault, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 922 through 923. The code is exempt from POA reporting. Coders also document this condition as injury due to biological warfare. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Poisoning/toxic effect/adverse effects/underdosing, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
T65.893S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Injury due to biological warfare
- Injury due to poison gas weapon
- War injury caused by chemical
- War injury due to biological warfare
- War injury due to gases, fumes and chemicals
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Toxic effect of other and unspecified substances (T65). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Acrylamide
a colorless, odorless, highly water soluble vinyl monomer formed from the hydration of acrylonitrile. it is primarily used in research laboratories for electrophoresis, chromatography, and electron microscopy and in the sewage and wastewater treatment industries.Acrylamides
colorless, odorless crystals that are used extensively in research laboratories for the preparation of polyacrylamide gels for electrophoresis and in organic synthesis, and polymerization. some of its polymers are used in sewage and wastewater treatment, permanent press fabrics, and as soil conditioning agents.Acrylonitrile
a highly poisonous compound used widely in the manufacture of plastics, adhesives and synthetic rubber.Epoxide Hydrolases
enzymes that catalyze reversibly the formation of an epoxide or arene oxide from a glycol or aromatic diol, respectively.Styrene
a colorless, toxic liquid with a strong aromatic odor. it is used to make rubbers, polymers and copolymers, and polystyrene plastics.Styrenes
derivatives and polymers of styrene. they are used in the manufacturing of synthetic rubber, plastics, and resins. some of the polymers form the skeletal structures for ion exchange resin beads.
Table of Drugs and ChemicalsClinical
Substances in the Table of Drugs and Chemicals that reference this code family. Always confirm in the Tabular List before coding.
| Substance | Accidental | Self-harm | Assault | Undetermined | Adverse Effect | Underdosing |
|---|---|---|---|---|---|---|
| Acrylamide | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Acrylonitrile | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Adhesive NEC | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Antiaris toxicaria | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Auramine | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Auramine::dye | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Auramine::fungicide | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Benzidine | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Bergamot oil | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Cleaner, cleansing agent, type not specified | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Cleaner, cleansing agent, type not specified::of paint or varnish | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Cleaner, cleansing agent, type not specified::specified type NEC | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Cordite | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Cordite::vapor | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Diethylhexylphthalate | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Disinfectant | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Disinfectant::alkaline | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Disinfectant::aromatic | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Disinfectant::intestinal | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Epoxy resin | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Fertilizers NEC | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Fertilizers NEC::with herbicide mixture | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Furniture polish | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Glutaraldehyde (nonmedicinal) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Glutaraldehyde (nonmedicinal)::medicinal | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Grease | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Guano | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Ink | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Isophorone | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Liquor creosolis compositus | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Monosodium glutamate | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Myristicin | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Naphthol | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Naphthylamine | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Nitrocellulose | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Nitrocellulose::lacquer | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Nitronaphthalene | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::bitter almond | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::cloves | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::colors | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::fumes | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::lubricating | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::Niobe | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::vitriol (liquid) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::vitriol (liquid)::fumes | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Oil (of)::wintergreen (bitter) NEC | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| PBB (polybrominated biphenyls) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| PCB | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Permanganate | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Phosphate | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Phosphate::laxative | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Phosphate::organic | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Phosphate::solvent | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Phosphate::tricresyl | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Phthalates | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Phthalic anhydride | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Pine oil (disinfectant) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Pitch | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Plant | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Plant::food or fertilizer NEC | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Plant::food or fertilizer NEC::containing herbicide | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Plant::noxious, used as food | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Plant::noxious, used as food::berries | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Plant::noxious, used as food::seeds | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Plant::noxious, used as food::specified type NEC | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Polish (car) (floor) (furniture) (metal) (porcelain) (silver) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Polish (car) (floor) (furniture) (metal) (porcelain) (silver)::abrasive | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Polish (car) (floor) (furniture) (metal) (porcelain) (silver)::porcelain | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Polychlorinated biphenyl | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Preservative (nonmedicinal) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Preservative (nonmedicinal)::medicinal | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Preservative (nonmedicinal)::wood | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Prussian blue | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Prussian blue::commercial | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Prussian blue::therapeutic | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Psoralene (nonmedicinal) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Reducing agent, industrial NEC | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Resorcin, resorcinol (nonmedicinal) | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Resorcin, resorcinol (nonmedicinal)::medicinal | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Scouring powder | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Silicone NEC | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Silicone NEC::medicinal | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Soldering fluid | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Styrene | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Tartaric acid | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Thioglycolic acid | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Toilet deodorizer | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Toluidine | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Toluidine::vapor | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Tricresyl phosphate | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Tricresyl phosphate::solvent | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Triorthocresyl phosphate | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Triphenylphosphate | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Vinyl | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Vinyl::acetate | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Vinyl::bital | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Vinyl::bromide | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Vinyl::chloride | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Vinyl::ether | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Vinylidene chloride | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Whitewash | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
| Window cleaning fluid | T65.891 | T65.892 | T65.893 | T65.894 | – | – |
Patient EducationClinical
Poisoning
A poison is any substance that is harmful to your body. You might swallow it, inhale it, inject it, or absorb it through your skin. Any substance can be poisonous if too much is taken. Poisons can include:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert T65.893S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code History & ChangesHistory
Replaced This code was replaced in the FY 2026 code set by:
- T65.843S - Toxic effect of xylazine, assault, sequela
- T65.843S - Toxic effect of xylazine, assault, sequela
Questions About T65.893SOverview
Is T65.893S (Toxic effect of other specified substances, assault) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report toxic effect of other specified substances, assault, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in T65.893S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the toxic effect of other specified substances, assault itself has resolved, not the original event.
What MS-DRG does T65.893S group to?
When toxic effect of other specified substances, assault, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 922, 923, with relative weights from 1.0177 to 1.7494 depending on complications. Higher weights mean higher Medicare reimbursement.
Is T65.893S exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for toxic effect of other specified substances, assault, sequela on inpatient claims.
What is the ICD-9 equivalent of T65.893S?
Under the General Equivalence Mappings, toxic effect of other specified substances, assault, sequela converts to ICD-9-CM 909.1 (late eff nonmed substanc) and E969 (late effect assault). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
