Outpatient Coding Guidelines Flashcards

When coding an outpatient encounter for a patient on long-term anticoagulant therapy, the coder should:

Answer: Add Z79.01 (long-term anticoagulant use) as an additional code

Z79.01 (long-term current use of anticoagulants) is reported as an additional code whenever the patient is on ongoing anticoagulant therapy, as it affects care.

A patient presents for a follow-up visit after treatment for a malignant neoplasm. The cancer is in complete remission. How is this coded?

Answer: Code the follow-up Z-code (Z08) plus personal history of cancer

When a cancer is in complete remission and the patient is in follow-up, use Z08 (encounter for follow-up examination) plus a personal history code (Z85.xxx).

Which ICD-10-CM chapter contains codes for external causes of morbidity?

Answer: Chapter 20 (V00–Y99)

Chapter 20 of ICD-10-CM (V00–Y99) covers external causes of morbidity, including transport accidents, falls, and intentional injuries.

When a patient has both an acute and chronic form of the same condition, how is it coded?

Answer: Code both, sequencing the acute condition first

When both acute and chronic forms of a condition are present and both have codes, report both codes with the acute condition sequenced first.

An outpatient visit documents 'hypertensive chronic kidney disease, stage 3.' How is this combination coded?

Answer: One combination code from I12.9 with N18.3 as additional code

ICD-10-CM provides combination codes for hypertensive CKD (I12.9); N18.3 is added as an additional code to specify the CKD stage.

What is the purpose of the 'Excludes1' note in ICD-10-CM?

Answer: The two conditions cannot occur together and cannot be coded together

An Excludes1 note means the excluded condition is NOT included in the code and the two conditions cannot occur together, so they may never be coded together.