D89.2 Hypergammaglobulinemia, unspecified

Billable ICD-10-CM code, FY2026.

Applies from D89 Other disorders involving the immune mechanism, not elsewhere classified

Excludes1 (never code together)

• hyperglobulinemia NOS (R77.1)
• monoclonal gammopathy (of undetermined significance) (D47.2)

Excludes2 (not included here)

• transplant failure and rejection (T86.-)

MS-DRG index

Defines the logic of DRG(s) 814-816 in MDC 16.

Approximate ICD-9-CM (GEMs)

• 273.1 Monoclonal paraproteinemia (approximate)
• 289.89 Other specified diseases of blood and blood-forming organs (approximate)

Code annotations containing back-references to D89.2

Back-references to D89.2

• Type 2 Excludes: D75 Other and unspecified diseases of blood and blood-forming organs ("hypergammaglobulinemia NOS (D89.2)")

Back-references to D89

• Type 1 Excludes: D72 Other disorders of white blood cells ("immunity disorders (D80-D89)")

Diagnosis Index entries for D89.2

• Cryofibrinogenemia
• Hypergammaglobulinemia
• Paraproteinemia
• Paraproteinemia › benign (familial)

Nearby codes

• D89 Other disorders involving the immune mechanism, not elsewhere classified
• D89.0 Polyclonal hypergammaglobulinemia
• D89.1 Cryoglobulinemia
• D89.2 Hypergammaglobulinemia, unspecified (this code)
• D89.3 Immune reconstitution syndrome
• D89.4 Mast cell activation syndrome and related disorders
• D89.40 Mast cell activation, unspecified
• D89.41 Monoclonal mast cell activation syndrome
• D89.42 Idiopathic mast cell activation syndrome