T37.5X5D

✓ Billable

Adverse effect of antiviral drugs, subsequent encounter

Injury, poisoning and certain other consequences of external causes (S00-T88)

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

T37.5

• amantadine (T42.8-)
• cytarabine (T45.1-)

T37

• anti-infectives topically used for ear, nose and throat (T49.6-)
• anti-infectives topically used for eye (T49.5-)
• locally applied anti-infectives NEC (T49.0-)

Clinical Description

ICD-10-CM code T37.5X5D represents adverse effect of antiviral drugs, subsequent encounter. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 8-character code at the 7th level of specificity. This is the most specific code available in this subcategory. Coders should note that T37.5X5D has 5 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code T37.5X5D?

ICD-10-CM code T37.5X5D is "Adverse effect of antiviral drugs, subsequent encounter". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is T37.5X5D a billable ICD-10 code?

Yes, T37.5X5D is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with T37.5X5D?

T37.5X5D has 5 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in T37.5X5

Other codes in the same category that may be relevant for differential coding:

T37.5X5AAdverse effect of antiviral drugs, initial encounter T37.5X5SAdverse effect of antiviral drugs, sequela

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Code Information

CodeT37.5X5D

BillableYes

ParentT37.5X5

CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)

Excludes15 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)