A06.5 Amebic lung abscess

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applicable to

• Amebic abscess of lung (and liver)

Applies from A06 Amebiasis

Includes

• infection due to Entamoeba histolytica

Excludes1 (never code together)

• other protozoal intestinal diseases (A07.-)

Excludes2 (not included here)

• acanthamebiasis (B60.1-)
• Naegleriasis (B60.2)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 283 — Empyema, Lung Abscess
• CMS-HCC V22: HCC 115 — Pneumococcal Pneumonia, Empyema, Lung Abscess
• ESRD V24: HCC 115

MS-DRG index

Defines the logic of DRG(s) 177-179 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 006.4 Amebic lung abscess

Code annotations containing back-references to A06.5

Back-references to A06.5

• Type 1 Excludes: J99 Respiratory disorders in diseases classified elsewhere ("amebiasis (A06.5)")

Back-references to A06

• Type 2 Excludes: P37 Other congenital infectious and parasitic diseases ("infectious neonatal diarrhea (A00-A09)")

Diagnosis Index entries for A06.5

• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › amebic › lung (and liver) (without mention of brain abscess)
• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › liver (cholangitic) (hematogenic) (lymphogenic) (pylephlebitic) (pyogenic) › amebic (due to Entamoeba histolytica) (dysenteric) (tropical) › with › lung abscess
• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › lung (miliary) (putrid) › amebic (with liver abscess)
• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › lung (miliary) (putrid) › amebic (with liver abscess) › with › pneumonia

Nearby codes

• A06.0 Acute amebic dysentery
• A06.1 Chronic intestinal amebiasis
• A06.2 Amebic nondysenteric colitis
• A06.3 Ameboma of intestine
• A06.4 Amebic liver abscess
• A06.5 Amebic lung abscess (this code)
• A06.6 Amebic brain abscess
• A06.7 Cutaneous amebiasis
• A06.8 Amebic infection of other sites
• A06.81 Amebic cystitis
• A06.82 Other amebic genitourinary infections