R76.89 Other specified abnormal immunological findings in serum

The ICD-10-CM code for Other specified abnormal immunological findings in serum is R76.89 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

Section

R70-R79: Abnormal findings on examination of blood, without diagnosis (R70-R79)

Category R76

9 codes (6 billable)

FY2026 Status

New code in FY2026

Also Known As

ICD-10-CM Alphabetic Index entries that lead to R76.89:

• Elevated, elevation › immunoglobulin level
• Positive › serology for syphilis › false
• Abnormal, abnormality, abnormalities › immunological findings › in serum › specified NEC

Inclusion Terms

• Raised level of immunoglobulins NOS

Official Coding Guidelines

Repeated falls vs history of falling

d. Repeated falls Code R29.6, Repeated falls, is for use for encounters when a patient has recently fallen and the reason for the fall is being investigated. Code Z91.81, History of falling, is for use when a patient has fallen in the past and is at risk for future falls. When appropriate, both codes R29.6 and Z91.81 may be assigned together.

Use of R40.20 unspecified coma; do not report for induced/sedated

e. Coma Code R40.20, Unspecified coma, should be assigned when the underlying cause of the coma is not known, or the cause is a traumatic brain injury and the coma scale is not documented in the medical record. Do not report codes for unspecified coma, individual or total Glasgow coma scale scores for a patient with a medically induced coma or a sedated patient.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool