DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

A70 diagnosis code · Billable category · FY2027

A70 Chlamydia psittaci infections

  • Billable
  • CC
  • POA reported

A70 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

CC / MCC
CC
MS-DRG
865-866
HCC V28
–
POA
Reported
Code Editor
–
Index entries
9

Instructions

At A70

Inclusion terms

  • Ornithosis
  • Parrot fever
  • Psittacosis

Notes that also apply

Block A70-A74 instructions (Excludes1 1): printed on the block page.

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Ornithosis → A70
  • Parrot fever → A70
  • Psittacosis → A70
  • Chlamydia, chlamydialpsittaci (infection) → A70
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)parrot → A70
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)psittacosis → A70
  • Infection, infected, infective (opportunistic)Chlamydia, chlamydialpsittaci → A70
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)ornithosis → A70
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved)in (due to)psittacosis → A70

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

Medicare grouping and edits

CMS files for A70
CC / MCCCC
PDX exclusion list0131 (1 code)
Appendix BMDC 18 Infectious and Parasitic Diseases, Systemic or Unspecified Sites, MS-DRG 865-866 (Viral Illness with MCC…)
Code Editor–
POAReported
HCC V28–

CC 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