B83.1 Gnathostomiasis

Billable ICD-10-CM code, FY2026.

Applicable to

• Wandering swelling

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) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 128.1 Gnathostomiasis

Code annotations containing back-references to B83.1

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 B83.1

• Gnathostoma spinigerum (infection) (infestation), gnathostomiasis (wandering swelling)
• Infection, infected, infective (opportunistic) › Gnathostoma (spinigerum)
• Infestation › Gnathostoma (spinigerum)
• Infestation › helminth › gnathostomiasis
• Infestation › nematode NEC (intestinal) › Gnathostoma spinigerum
• Swelling (of) › wandering, due to Gnathostoma (spinigerum)

Nearby codes

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