2027 ICD-10-CM Diagnosis Code T51.0X1SToxic effect of ethanol, accidental (unintentional), sequela
T51.0X1S is a billable ICD-10-CM diagnosis code for toxic effect of ethanol, accidental (unintentional), 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 2027 (October 1, 2026 through September 30, 2027) 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
T51.0X1S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Toxic effects of substances chiefly nonmedicinal as to source (T51-T65).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Accidental poisoning by alcoholic beverage
- Accidental poisoning by denatured alcohol
- Accidental poisoning caused by alcohol
- Acute symptomatic epileptic seizure due to ethyl alcohol poisoning
- Adverse drug interaction
- Adverse medication interaction with alcohol
- Adverse reaction to alcohol
- Adverse reaction to alcoholic beverage
- Alcohol-induced epilepsy
- Alcohol-induced hypoglycemia
- Ataxia caused by alcohol
- Delayed headache caused by alcohol
- Drug interaction with alcohol
- Drug-induced epilepsy
- Macrocytosis caused by alcohol
- Non-anemic red cell disorder
- Non-diabetic hypoglycemia
- Osteonecrosis caused by alcohol
- Pain in lymph nodes after alcohol consumption
- Pain of lymph node
- Pain of lymphoreticular structure
- Poisoning caused by alcohol
- Secondary thrombocytopenia
- Substance-induced ataxia
- Thrombocytopenia caused by alcohol
- Thrombocytopenia caused by drugs
- Toxic effect of denatured alcohol
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Toxic effect of alcohol (T51). 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 2027, published by CMS and the National Center for Health Statistics.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to T51.0X1S: its own notes plus those printed at T51.0, T51, block T51-T65, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- contact with and (suspected) exposure to toxic substances (Z77.-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify any retained foreign body, if applicable (Z18.-)
Notes
General instructions on how these codes are used.
- When no intent is indicated code to accidental. Undetermined intent is only for use when there is specific documentation in the record that the intent of the toxic effect cannot be determined.
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
7th Character
Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.
- The appropriate 7th character is to be added to each code from category T51
- Ainitial encounter
- Dsubsequent encounter
- Ssequela this code
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name T51.0X1S, its category, or a range that includes it.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Ethanol
a clear, colorless liquid rapidly absorbed from the gastrointestinal tract and distributed throughout the body. it has bactericidal activity and is used often as a topical disinfectant. it is widely used as a solvent and preservative in pharmaceutical preparations as well as serving as the primary ingredient in alcoholic beverages.
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 |
|---|---|---|---|---|---|---|
| Absinthe | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Absinthe::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::absolute | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::absolute::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::dehydrated | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::dehydrated::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::denatured | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::ethyl | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::ethyl::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::grain | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::grain::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::industrial | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::preparation for consumption | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Alcohol::surgical | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Central nervous system::depressants::ethanol | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Denatured alcohol | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Ethanol | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Ethanol::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Ethyl::alcohol | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Ethyl::alcohol::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Grain alcohol | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Industrial::alcohol | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Neutral spirits | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Neutral spirits::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Spirit (s) (neutral) NEC | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Spirit (s) (neutral) NEC::beverage | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Spirit (s) (neutral) NEC::industrial | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
| Spirit (s) (neutral) NEC::surgical | T51.0X1 | T51.0X2 | T51.0X3 | T51.0X4 | – | – |
Patient EducationClinical
Alcohol
Many Americans drink alcohol at least occasionally. The Dietary Guidelines for Americans say that adults of legal drinking age should either not drink or drink in moderation. Drinking less is better for your health than drinking more. Also, there are some people who should not drink at all.
The full article covers:
- How does alcohol affect the body?
- Why are the effects of alcohol different from person to person?
- What is moderate drinking?
- What is a standard drink?
- Who should not drink alcohol?
- What is excessive drinking?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert T51.0X1S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T51.0X1SOverview
What is the ICD-10 code for toxic effect of ethanol, accidental (unintentional), sequela?
The ICD-10-CM code for toxic effect of ethanol, accidental (unintentional), sequela is T51.0X1S (sometimes written as T510X1S). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is T51.0X1S (Toxic effect of ethanol, accidental (unintentional)) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report toxic effect of ethanol, accidental (unintentional), sequela on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What does the 7th character S in T51.0X1S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the toxic effect of ethanol, accidental (unintentional) itself has resolved, not the original event.
What MS-DRG does T51.0X1S group to?
When toxic effect of ethanol, accidental (unintentional), sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 923, 922, with relative weights from 0.9980 to 1.6248 depending on complications. Higher weights mean higher Medicare reimbursement.
Is T51.0X1S 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 ethanol, accidental (unintentional), sequela on inpatient claims. The code appears in the Toxic effects of substances chiefly nonmedicinal as to source (T51-T65) range of the CMS exempt list.
