T57.1X1 – Toxic effect of phosphorus and its compounds, accidental (unintentional)

ICD-10-CM 2027 diagnosis code · Toxic effects of substances chiefly nonmedicinal as to source

Non-billable header

ICD-10-CM code T57.1X1

Code: T57.1X1 (claims format: T571X1)
Description: Toxic effect of phosphorus and its compounds, accidental (unintentional)
Short description: Toxic effect of phosphorus and its compounds, accidental
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: T51-T65 Toxic effects of substances chiefly nonmedicinal as to source
Parent codes: T57 › T57.1 › T57.1X

Billable codes under T57.1X1

T57.1X1 is a header code and cannot be used on claims. Choose the most specific code:

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care.

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes for T57.1X1

Applicable to:

Toxic effect of phosphorus and its compounds NOS

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

T57 – Toxic effect of other inorganic substances

7th character note:

The appropriate 7th character is to be added to each code from category T57

T57.1 – Toxic effect of phosphorus and its compounds

Excludes1 (not coded here):

organophosphate insecticides (T60.0)

Block T51-T65

Excludes1 (not coded here):

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.-)

Notes:

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.

Related codes in T57.1X

Frequently asked questions

What is ICD-10 code T57.1X1?

T57.1X1 is the ICD-10-CM code for toxic effect of phosphorus and its compounds, accidental (unintentional), in the block T51-T65 (Toxic effects of substances chiefly nonmedicinal as to source).

Is T57.1X1 a billable code?

No. T57.1X1 is a header code with more specific child codes; report one of the billable codes listed above.

What category does T57.1X1 belong to?

It belongs to category T57 – Toxic effect of other inorganic substances.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.