Question 1

Is T49 a billable ICD-10 code?

Accepted Answer

No, T49 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code T49 mean?

Accepted Answer

ICD-10-CM code T49 represents Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code T49 introduced?

Accepted Answer

Code T49 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code T49?

Accepted Answer

The parent category for T49 is section:T36-T50 (Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

Does T49 require a 7th character extension?

Accepted Answer

Yes, T49 requires a 7th character to specify the encounter type. Available extensions include: A (initial encounter), D (subsequent encounter), S (sequela). Use "X" as a placeholder to fill empty positions before the 7th character (e.g., T49XXA for initial encounter). The extension indicates whether this is an initial visit, follow-up, or treatment for a late effect.

T492026

Excludes11Not coded together

Code First7Sequence another code first

Excludes27Not included here

Use Additional Code5Add code for detail

Notes3Additional information

Includes5Included conditions

7th Character Extensions3Encounter type specifiers

Excluded By1Codes that exclude this one

Is T49 a billable ICD-10 code?

What does ICD-10 code T49 mean?

When was ICD-10 code T49 introduced?

What is the parent category for ICD-10 code T49?

Does T49 require a 7th character extension?