Question 1

Is K21 a billable ICD-10 code?

Accepted Answer

No, K21 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 K21 mean?

Accepted Answer

ICD-10-CM code K21 represents Gastro-esophageal reflux disease. 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 K21 introduced?

Accepted Answer

Code K21 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 K21?

Accepted Answer

The parent category for K21 is section:K20-K31 (Diseases of esophagus, stomach and duodenum (K20-K31)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

What conditions are excluded from K21?

Accepted Answer

Code K21 has Type 1 Excludes (mutually exclusive conditions) including: newborn esophageal reflux (P78.83). These conditions cannot be coded together with K21 as they represent different diagnoses.

K212026

Excludes11Not coded together

Excludes29Not included here

Is K21 a billable ICD-10 code?

What does ICD-10 code K21 mean?

When was ICD-10 code K21 introduced?

What is the parent category for ICD-10 code K21?

What conditions are excluded from K21?