T52.2 is the authoritative medical code for Toxic effects of homologues of benzene. This classification is used in medical billing and clinical recording to specify the clinical criteria for toxic effects of homologues of benzene (ICD-10-CM T52.2), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Toxic effects of homologues of benzene is a non-billable ICD-10-CM category code T52.2. A more specific billable subcode must be selected for claims submission. Inclusion terms: Toxic effects of toluene methylbenzene; Toxic effects of xylene dimethylbenzene. Excludes1 (not coded here): halogen derivatives of aliphatic and aromatic hydrocarbons T53.-; contact with and suspected exposure to toxic substances Z77.-. Use additional code: code(s):; for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents J60-J70; personal history of foreign body fully removed Z87.821; to identify any retained foreign body, if applicable Z18.-. 7th character: The appropriate 7th character is to be added to each code from category T52.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T52.2 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Toxic effects of toluene methylbenzene
- Toxic effects of xylene dimethylbenzene
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- halogen derivatives of aliphatic and aromatic hydrocarbons T53.-
- contact with and suspected exposure to toxic substances Z77.-
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code(s):
- for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents J60-J70
- personal history of foreign body fully removed Z87.821
- to identify any retained foreign body, if applicable Z18.-
Frequently Asked Questions (FAQ) & Clinical Guidance
Can T52.2 be billed directly?
No. T52.2 (Toxic effects of homologues of benzene) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does T52.2 require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T52.
What can't be coded together with T52.2?
Per Excludes1 instructions, T52.2 must not be reported with: halogen derivatives of aliphatic and aromatic hydrocarbons (T53.-); contact with and (suspected) exposure to toxic substances (Z77.-).
Is an additional code needed with T52.2?
Use additional code(s) to specify: code(s):; for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70); personal history of foreign body fully removed (Z87.821); to identify any retained foreign body, if applicable (Z18.-).
What conditions are included under T52.2?
Toxic effects of homologues of benzene includes: Toxic effects of toluene [methylbenzene]; Toxic effects of xylene [dimethylbenzene].
Codes in This Family (17)
Official ICD-10-CM classifications in the same code family as T52.2, with their registry titles.
- T52.2X — Toxic effects of homologues of benzene
- T52.2X1 — Toxic effect of homologues of benzene, accidental (unintentional)
- T52.2X1A — Toxic effect of homologues of benzene, accidental (unintentional), initial encounter
- T52.2X1D — Toxic effect of homologues of benzene, accidental (unintentional), subsequent encounter
- T52.2X1S — Toxic effect of homologues of benzene, accidental (unintentional), sequela
- T52.2X2 — Toxic effect of homologues of benzene, intentional self-harm
- T52.2X2A — Toxic effect of homologues of benzene, intentional self-harm, initial encounter
- T52.2X2D — Toxic effect of homologues of benzene, intentional self-harm, subsequent encounter
- T52.2X2S — Toxic effect of homologues of benzene, intentional self-harm, sequela
- T52.2X3 — Toxic effect of homologues of benzene, assault
- T52.2X3A — Toxic effect of homologues of benzene, assault, initial encounter
- T52.2X3D — Toxic effect of homologues of benzene, assault, subsequent encounter
- T52.2X3S — Toxic effect of homologues of benzene, assault, sequela
- T52.2X4 — Toxic effect of homologues of benzene, undetermined
- T52.2X4A — Toxic effect of homologues of benzene, undetermined, initial encounter
- T52.2X4D — Toxic effect of homologues of benzene, undetermined, subsequent encounter
- T52.2X4S — Toxic effect of homologues of benzene, undetermined, sequela
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