Is W57.XXXA a billable ICD-10-CM code?

Yes. W57.XXXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does W57.XXXA sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Exposure to animate mechanical forces (W50-W64).

What cannot be coded together with W57.XXXA?

W57.XXXA carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

W57.XXXA

W57.XXXA — Bitten or stung by nonvenomous insect and other nonvenomous arthropods, initial encounter

Billable / specific codeICD-10-CM

W57.XXXA is a billable, specific ICD-10-CM code for bitten or stung by nonvenomous insect and other nonvenomous arthropods, initial encounter. It is valid for submission on a claim.

7th character "A" — initial encounter

The appropriate 7th character is to be added to code W57

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

contact with venomous insects and arthropods (T63.2-, T63.3-, T63.4-)

Risk adjustment

W57.XXXA does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

W57.XXXA is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58747Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58761Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

Related codes at this level

Codes that share W57. If W57.XXXA is not quite right, the correct code is usually one of these.

Questions about W57.XXXA

Is W57.XXXA a billable ICD-10-CM code?: Yes. W57.XXXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does W57.XXXA sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Exposure to animate mechanical forces (W50-W64).
What cannot be coded together with W57.XXXA?: W57.XXXA carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.