Excludes1 pair
J70.4 vs J84-
J70.4 and J84 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
The official note, declared on J84
drug-induced interstitial lung disorders (J70.2-J70.4)
J70.4
Drug-induced interstitial lung disorders, unspecified
BillableUnspecified
- Chapter 10
- Diseases of the respiratory system
- Section
- J60-J70
Indexed under
- Disorder › lung, interstitial, drug-induced
- Pneumonitis › chemotherapy
J84
Other interstitial pulmonary diseases
Not billable
- Chapter 10
- Diseases of the respiratory system
- Section
- J80-J84
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027