ICD10BillableValid for clinical use

ICD-10 Code A70: Chlamydia psittaci infections

A70 is a billable ICD-10 diagnosis code used to classify Chlamydia psittaci infections in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).

When is it used?

  • May be used when a clinician documents chlamydia psittaci infections in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
1Certain infectious and parasitic diseases (A00-B99)
block
A70-A74Other diseases caused by chlamydiae
currentA70-A74

Official coding notes

Inclusion terms
  • Ornithosis
  • Parrot fever
  • Psittacosis

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Infectious Disease SpecialistGeneral Physician

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
A70

Common synonyms

Chlamydia psittaci infections

Frequently asked questions

Code details

CodeA70
SystemICD10
Display nameChlamydia psittaci infections
ChapterCertain infectious and parasitic diseases (A00-B99)
BlockOther diseases caused by chlamydiae

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Chlamydia, chlamydialFever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)Infection, infected, infective(opportunistic)OrnithosisParrot feverPneumonia(acute) (double) (migratory) (purulent) (septic) (unresolved)Pneumonia(acute) (double) (migratory) (purulent) (septic) (unresolved)Pneumonia(acute) (double) (migratory) (purulent) (septic) (unresolved)Psittacosis

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code A70 for Chlamydia psittaci infections | HealthAssure