DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

J17 diagnosis code · Billable category · FY2027

J17 Pneumonia in diseases classified elsewhere

  • Billable
  • MCC
  • POA reported

J17 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 10 Diseases of the respiratory system (J00-J99)
  2. J09-J18 Influenza and pneumonia (J09-J18)
  3. J17 Pneumonia in diseases classified elsewhere
CC / MCC
MCC
MS-DRG
177-179
HCC V28
–
POA
Reported
Code Editor
Manifestation
Index entries
7

Instructions

At J17

Excludes1

  • candidial pneumonia (B37.1) B37.1
  • chlamydial pneumonia (J16.0) J16.0
  • gonorrheal pneumonia (A54.84) A54.84
  • histoplasmosis pneumonia (B39.0-B39.2) B39.0 B39.2
  • measles pneumonia (B05.2) B05.2
  • nocardiosis pneumonia (A43.0) A43.0
  • pneumocystosis (B59) B59
  • pneumonia due to Pneumocystis carinii (B59) B59
  • pneumonia due to Pneumocystis jirovecii (B59) B59
  • pneumonia in actinomycosis (A42.0) A42.0
  • pneumonia in anthrax (A22.1) A22.1
  • pneumonia in ascariasis (B77.81) B77.81
  • pneumonia in aspergillosis (B44.0-B44.1) B44.0 B44.1
  • pneumonia in coccidioidomycosis (B38.0-B38.2) B38.0 B38.2
  • pneumonia in cytomegalovirus disease (B25.0) B25.0
  • pneumonia in toxoplasmosis (B58.3) B58.3
  • rubella pneumonia (B06.81) B06.81
  • salmonella pneumonia (A02.22) A02.22
  • spirochetal infection NEC with pneumonia (A69.8) A69.8
  • tularemia pneumonia (A21.2) A21.2
  • typhoid fever with pneumonia (A01.03) A01.03
  • varicella pneumonia (B01.2) B01.2
  • whooping cough with pneumonia (A37 with fifth-character 1) A37

Code first

  • underlying disease, such as:
  • Q fever (A78) A78
  • rheumatic fever (I00) I00
  • schistosomiasis (B65.0-B65.9) B65.0 B65.9

Code also

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

Notes that also apply

Block J09-J18 instructions (Excludes2 9, Use additional code 1): printed on the block page.

Chapter 10 instructions (Notes 1, Excludes2 9, Use additional code 7): printed on the chapter 10 page.

Index entries

  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)postinfectional NEC → B99 [J17]
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)rheumatic → I00 [J17]
  • Rheumatic (acute) (subacute)pneumonia → I00 [J17]
  • Bilharziasispulmonary NOSpneumonia → B65.9 [J17]
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)schistosomiasis → B65.9 [J17]
  • Schistosomiasislung NECpneumonia → B65.9 [J17]
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)rheumatic fever → I00 [J17]

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for J17
CC / MCCMCC
PDX exclusion list0113 (129 codes)
Appendix BMDC 04 Diseases and Disorders of the Respiratory System, MS-DRG 177-179 (Respiratory Infections and Inflammations with MCC…)
Code EditorManifestation code: not allowed as principal diagnosis
POAReported
HCC V28–

MCC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy