2026 ICD-10-CM Diagnosis Code T47.8X3SPoisoning by other agents primarily affecting gastrointestinal system, assault, sequela
T47.8X3S is a billable ICD-10-CM diagnosis code for poisoning by other agents primarily affecting gastrointestinal system, 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. 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
T47.8X3S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Coding GuidelinesGuidance
When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined). If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.
The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of agents primarily affecting the gastrointestinal system (T47). 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
Actinobacillus equuli
a genus of gram-negative bacteria in the genus actinobacillus, which is pathogenic for horses and pigs.Aeromonas caviae
a species of gram-negative, facultatively anaerobic bacteria that is found in domestic and wild animals including birds, and fish. in humans it causes gastroenteritis in young children and some adults.Agrobacterium tumefaciens
a species of gram-negative, aerobic bacteria isolated from soil and the stems, leafs, and roots of plants. some biotypes are pathogenic and cause the formation of plant tumors in a wide variety of higher plants. the species is a major research tool in biotechnology.Aliivibrio fischeri
a species of gram-negative bacteria in the genus aliivibrio, which exhibits luminescence. a. fischeri is found in a symbiotic relationship with the squid euprymna scolopes.Anthrax
an acute infection caused by the spore-forming bacteria bacillus anthracis. it commonly affects hoofed animals such as sheep and goats. infection in humans often involves the skin (cutaneous anthrax), the lungs (inhalation anthrax), or the gastrointestinal tract. anthrax is not contagious and can be treated with antibiotics.Bacillus
a genus of bacillaceae that are spore-forming, rod-shaped cells. most species are saprophytic soil forms with only a few species being pathogenic.Bacillus amyloliquefaciens
a non-pathogenic species of bacillus that occurs in soil as well as some fermented vegetables and fermented dairy products. it produces bacteriocins and antifungal agents and is used in food preservation as well as a probiotic.Bacillus anthracis
a species of bacteria that causes anthrax in humans and animals.Bacillus cereus
a species of rod-shaped bacteria that is a common soil saprophyte. its spores are widespread and multiplication has been observed chiefly in foods. contamination may lead to food poisoning.Bacillus clausii
an alkalophilic species of bacillus that occurs in soil. it produces anti-bacterial agents and is used as a probiotic.Bacillus coagulans
a microaerophilic, lactic acid producing species of bacillus that occurs in fermented foods. it also produces anti-infective agents and is used as a probiotic.Bacillus firmus
a species of bacillus that occurs in soil and marine sediments. many strains are alkalophilic and able to metabolize heavy metals; it may therefore be a useful species for environmental biodegradation.Bacillus licheniformis
a species of bacillus that occurs in soil and is frequently found on bird feathers. some strains cause foodborne disease, whereas other strains produce antifungal agents and antibacterial agents and function as probiotics. this species can also produce enzymes for industrial applications.Bacillus megaterium
a species of bacteria whose spores vary from round to elongate. it is a common soil saprophyte.Bacillus Phages
viruses whose host is bacillus. frequently encountered bacillus phages include bacteriophage phi 29 and bacteriophage phi 105.Bacillus pumilus
a species of bacillus that occurs in soil, especially around the roots of some plants where it has anti-fungal and anti-nematode activities. it can also produce enzymes for industrial applications.Bacillus subtilis
a species of gram-positive bacteria that is a common soil and water saprophyte.Bacillus thuringiensis
a species of gram-positive bacteria which may be pathogenic for certain insects. it is used for the biological control of the gypsy moth.Bacillus thuringiensis Toxins
endotoxins produced by bacillus thuringiensis used in transgenic plants and insecticides. when eaten by a susceptible insect they are protease activated in the insect midgut resulting in death from bacterial septicemia.BCG Vaccine
an active immunizing agent and a viable avirulent attenuated strain of mycobacterium bovis, which confers immunity to mycobacterial infections. it is used also in immunotherapy of neoplasms due to its stimulation of antibodies and non-specific immunity.Bordetella bronchiseptica
a species of bordetella that is parasitic and pathogenic. it is found in the respiratory tract of domestic and wild mammalian animals and can be transmitted from animals to man. it is a common cause of bronchopneumonia in lower animals.Erwinia amylovora
a species of gram-negative bacteria, in the genus erwinia, causing a necrotic disease of plants.Escherichia coli
a species of gram-negative, facultatively anaerobic, rod-shaped bacteria (gram-negative facultatively anaerobic rods) commonly found in the lower part of the intestine of warm-blooded animals. it is usually nonpathogenic, but some strains are known to produce diarrhea and pyogenic infections. pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (enterotoxigenic escherichia coli), etc.Geobacillus stearothermophilus
a species of gram-positive endospore-forming bacteria in the family bacillaceae, found in soil, hot springs, arctic waters, ocean sediments, and spoiled food products.Haemophilus ducreyi
a species of haemophilus that appears to be the pathogen or causative agent of the sexually transmitted disease, chancroid.Klebsiella oxytoca
a species of gram-negative bacteria causing urinary tract infections and septicemia.Klebsiella pneumoniae
gram-negative, non-motile, capsulated, gas-producing rods found widely in nature and associated with urinary and respiratory infections in humans.Morganella morganii
a species of morganella formerly classified as a proteus species. it is found in the feces of humans, dogs, other mammals, and reptiles. (from bergey's manual of determinative bacteriology, 9th ed)Paenibacillus polymyxa
a species of paenibacillus formerly classified as bacillus polymyxa that occurs in marine sediments and soil, especially around plant roots and rhizomes where it performs nitrogen fixation. it has activity against several species of pathogenic bacteria and produces polymyxins.Pectobacterium carotovorum
a species of gram-negative, facultatively anaerobic, rod-shaped bacteria that causes rotting, particularly of storage tissues, of a wide variety of plants and causes a vascular disease in carrots; and potato plants.Pseudomonas aeruginosa
a species of gram-negative, aerobic, rod-shaped bacteria commonly isolated from clinical specimens (wound, burn, and urinary tract infections). it is also found widely distributed in soil and water. p. aeruginosa is a major agent of nosocomial infection.Pseudomonas fluorescens
a species of nonpathogenic fluorescent bacteria found in feces, sewage, soil, and water, and which liquefy gelatin.Pseudomonas stutzeri
a species of gram-negative bacteria in the genus pseudomonas, containing multiple genomovars. it is distinguishable from other pseudomonad species by its ability to use maltose and starch as sole carbon and energy sources. it can degrade environmental pollutants and has been used as a model organism to study denitrification.Shigella dysenteriae
a species of gram-negative, facultatively anaerobic, rod-shaped bacteria that is extremely pathogenic and causes severe dysentery. infection with this organism often leads to ulceration of the intestinal epithelium.Subtilisins
a family of serine endopeptidases isolated from bacillus subtilis. ec 3.4.21.-Vibrio cholerae
the etiologic agent of cholera.Xanthomonas campestris
a species of gram-negative, aerobic bacteria that is pathogenic for plants.Yersinia pestis
the etiologic agent of plague in man, rats, ground squirrels, and other rodents.Carrageenan
a water-soluble extractive mixture of sulfated polysaccharides from red algae. chief sources are the irish moss chondrus crispus (carrageen), and gigartina stellata. it is used as a stabilizer, for suspending cocoa in chocolate manufacture, and to clarify beverages.Cisapride
a substituted benzamide used for its prokinetic properties. it is used in the management of gastroesophageal reflux disease, functional dyspepsia, and other disorders associated with impaired gastrointestinal motility. (martindale the extra pharmacopoeia, 31st ed)
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.
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 T47.8X3S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T47.8X3SOverview
Is T47.8X3S a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report poisoning by other agents primarily affecting gastrointestinal system, assault, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in T47.8X3S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the poisoning by other agents primarily affecting gastrointestinal system, assault itself has resolved, not the original event.
What MS-DRG does T47.8X3S group to?
When poisoning by other agents primarily affecting gastrointestinal system, 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 T47.8X3S 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 poisoning by other agents primarily affecting gastrointestinal system, assault, sequela on inpatient claims.
What is the ICD-9 equivalent of T47.8X3S?
Under the General Equivalence Mappings, poisoning by other agents primarily affecting gastrointestinal system, assault, sequela converts to ICD-9-CM 909.0 (late eff drug poisoning) 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.
