A07.1 Giardiasis [lambliasis]

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Giardiasis [lambliasis] is A07.1 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
A00-A09: Intestinal infectious diseases (A00-A09)
Category A07
8 codes (7 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to A07.1:

  • Giardiasis
  • Lambliasis, lambliosis
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › Giardia lamblia
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › giardial
  • Diarrhea, diarrheal (disease) (infantile) (inflammatory) › Giardia lamblia
  • Diarrhea, diarrheal (disease) (infantile) (inflammatory) › giardial
  • Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › Lamblia
  • Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic) › giardial

U.S. Hospital Utilization

  • An estimated 2,190 U.S. inpatient stays in 2023 included A07.1 among the documented diagnoses.
  • 550 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

HIV Infections (TOC entry)

a. Human Immunodeficiency Virus (HIV) Infections .............................................................. 19

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.1.a
Infectious agents causing diseases in other chapters (TOC)

b. Infectious agents as the cause of diseases classified to other chapters ................................. 22

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.1.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference A07.1 with the canonical source and edition:

A07.1 — Giardiasis [lambliasis]. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/A07.1

Canonical URL: https://icd10codingpro.com/codes/A07.1

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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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