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J16

J16Pneumonia due to other infectious organisms, not elsewhere classified

Non-billable headerICD-10-CM

J16 is a non-billable header ICD-10-CM code for pneumonia due to other infectious organisms, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • congenital pneumonia (P23.-)
  • ornithosis (A70)
  • pneumocystosis (B59)
  • pneumonia NOS (J18.9)

Code first

The underlying condition must be sequenced before this code.

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

  • , if applicable, any associated condition such as:
  • abscess (J85.1)
  • aspiration pneumonia (J69.-)

Other codes that can never be billed with J16

These codes carry an Excludes1 note pointing at J16. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading J16 alone.

  • J15Bacterial pneumonia, not elsewhere classified
  • J17Pneumonia in diseases classified elsewhere

Risk adjustment

J16 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead J16

2 child codes. Green means billable.

Questions about J16

Is J16 a billable ICD-10-CM code?
No. J16 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does J16 sit in the tabular list?
Diseases of the respiratory system (J00-J99), in the block Influenza and pneumonia (J09-J18).
What cannot be coded together with J16?
J16 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.