ICD-10-CM 2027 diagnosis code
T52.891DToxic effect of other organic solvents, accidental (unintentional), subsequent encounter
T52.891D is a valid, billable ICD-10-CM code for toxic effect of other organic solvents, accidental (unintentional), subsequent encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Toxic effect of other organic solvents, accidental, subs
Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data
About T52.891D
T52.891D is the ICD-10-CM diagnosis code for toxic effect of other organic solvents, accidental (unintentional), subsequent encounter. It belongs to category T52 (toxic effect of organic solvents), block T51-T65 (toxic effects of substances chiefly nonmedicinal as to source) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
The 7th character "D" means subsequent encounter: use it for encounters after active treatment, while the patient is healing or recovering.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 949 (Aftercare with CC/MCC, relative weight 1.123) and DRG 950 (Aftercare without CC/MCC, relative weight 0.7664), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.
It was added in FY2027, effective October 1, 2026.
7th character
Dsubsequent encounter
Other encounter types for T52.891:
Notes that apply from higher levels
Instructions written at a parent level also apply to T52.891D.
› From T52 Toxic effect of organic solvents
- halogen derivatives of aliphatic and aromatic hydrocarbons (T53.-)
Broader instructions also apply from T51-T65 Toxic effects of substances chiefly nonmedicinal as to source and Chapter 19: Injury, poisoning and certain other consequences of external causes.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2027 (effective 10/1/2026): Added
Common questions about T52.891D
Is T52.891D billable?
- Yes. T52.891D is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "D" at the end of T52.891D mean?
- It is the 7th character for subsequent encounter. Per the official guidelines, use it for encounters after active treatment, while the patient is healing or recovering.
Can T52.891D be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict T52.891D as a principal diagnosis.
Is T52.891D a CC or MCC?
- No. T52.891D is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does T52.891D group to?
- T52.891D is used in the MS-DRG v44.0 logic for MS-DRG 949 (Aftercare with CC/MCC) and MS-DRG 950 (Aftercare without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
Did T52.891D change for 2027?
- Yes. For FY2027 (effective October 1, 2026) it was added to the code set.