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ICD-10-CM 2027

ICD-10 code for major histocompatibility complex deficiency

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Deficiency, deficient › major histocompatibility complex”. Page updated September 29, 2026.

About coding major histocompatibility complex deficiency

The official ICD-10-CM index doesn't give a single default code for major histocompatibility complex deficiency; the code depends on the details below.

More specific major histocompatibility complex deficiency codes (official index)

  • class I D81.6 — Major histocompatibility complex class I deficiency
  • class II D81.7 — Major histocompatibility complex class II deficiency

Common questions about major histocompatibility complex deficiency ICD-10 codes

What is the ICD-10 code for class i major histocompatibility complex deficiency?

D81.6 — Major histocompatibility complex class I deficiency.

What is the ICD-10 code for class ii major histocompatibility complex deficiency?

D81.7 — Major histocompatibility complex class II deficiency.