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Code
Description

ICD-10-CM Code T78.49
Other allergy

NON-BILLABLE
Non-Billable Code
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.
7th Character Required
7th Character Required
Code requires 7th Character Extension identifier. This 7th Character usually captures Episode of Care information, such as "Initial Encounter," "Subsquent Encounter," or "Sequela."
| ICD-10 from 2011 - 2016

ICD Code T78.49 is a non-billable code. To code a diagnosis of this type, you must use specify a 7th character that describes the diagnosis 'other allergy' in more detail. The 7th characters that can be added, and the resulting billable codes, are as follows:


7th Digit Billable Code 7th Digit Specifies
A T78.49XA initial encounter
D T78.49XD subsequent encounter
S T78.49XS sequela

What is 7th Character Extension?

For codes less than 6 characters that require a 7th character a placeholder 'X' should be assigned for all characters less than 6. The 7th character must always be the 7th position of a code. E.g. The ICD-10-CM code T67.4 (Heat exhaustion due to salt depletion) requires an Episode of Care identifier. T67.4XXA Initial Encounter or T67.4XXD Subsequent Encounter. More Info

The ICD code T784 is used to code Idiosyncratic drug reaction

Idiosyncratic drug reactions, also known as type B reactions, are drug reactions that occur rarely and unpredictably amongst the population. This is not to be mistaken with idiopathic, which implies that the cause is not known. They frequently occur with exposure to new drugs, as they have not been fully tested and the full range of possible side-effects have not been discovered; they may also be listed as an adverse drug reaction with a drug, but are extremely rare.

Specialty: Emergency Medicine
MeSH Codes: , D018777, D018777, D001183, D006967
ICD 9 Codes: 995.3, 300, 995.3, 995.21, 995.3

Related Concepts SNOMET-CT

  • Jones-Mote type hypersensitivity (disorder)
  • Allergic reaction to insect venom (disorder)
  • Allergic sensitization by patch test (disorder)

Coding Advice SNOMET-CT

  • Episode of care information needed
  • Possible requirement for an external cause code

ICD-10-CM Alphabetical Index References for 'T78.49 - Other allergy'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code T78.49. Click on any term below to browse the alphabetical index.


Parent Code: T78.4 - Other and unspecified allergy

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/T7849