Other abnormalities of plasma proteins (R77) ICD-10-CM
The R77 code range covers other abnormalities of plasma proteins with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- disorders of plasma-protein metabolism E88.0
Codes in the R77 Range 6 codes · 5 billable
About the R77 Code Range
Abnormal findings involving plasma proteins fall within abnormal blood examination findings without a diagnosis.
The subdivisions separate abnormalities of albumin (R77.0), globulin (R77.1), and alphafetoprotein (R77.2). They also distinguish other specified plasma protein abnormalities (R77.8) from unspecified ones (R77.9).
Questions About This Page
How many billable codes are in the R77 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the R77 range classify?
The range classifies other abnormalities of plasma proteins. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
