B83.4 Internal hirudiniasis

Billable ICD-10-CM code, FY2026.

Excludes2 (not included here)

• external hirudiniasis (B88.3)

Applies from B83 Other helminthiases

Excludes1 (never code together)

• capillariasis NOS (B81.1)

Excludes2 (not included here)

• intestinal capillariasis (B81.1)

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 134.2 Hirudiniasis (approximate)

Code annotations containing back-references to B83.4

Back-references to B83.4

• Type 2 Excludes: B88.3 External hirudiniasis ("internal hirudiniasis (B83.4)")

Back-references to B83

• Code First: H94.0 Acoustic neuritis in infectious and parasitic diseases classified elsewhere ("parasitic disease (B65-B89)")
• Type 2 Excludes: J82 Pulmonary eosinophilia, not elsewhere classified ("pulmonary eosinophilia due to specified parasitic infection (B50-B83)")

Diagnosis Index entries for B83.4

• Hirudiniasis › internal
• Infestation › helminth › hirudiniasis, internal

Nearby codes

• B83 Other helminthiases
• B83.0 Visceral larva migrans
• B83.1 Gnathostomiasis
• B83.2 Angiostrongyliasis due to Parastrongylus cantonensis
• B83.3 Syngamiasis
• B83.4 Internal hirudiniasis (this code)
• B83.8 Other specified helminthiases
• B83.9 Helminthiasis, unspecified