ICD-10-CM 2027
ICD-10 code for proteinuria
From the official ICD-10-CM alphabetic index entry “Proteinuria”. Page updated September 29, 2026.
About coding proteinuria
The ICD-10-CM code for proteinuria is R80.9 (Proteinuria, unspecified). The official index lists 26 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R80.9.
Within R80, choose R80.9 (unspecified) only when documentation doesn't support a more specific option: isolated proteinuria (R80.0), persistent proteinuria, unspecified (R80.1), orthostatic proteinuria, unspecified (R80.2), Bence Jones proteinuria (R80.3) and other proteinuria (R80.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 695 (Kidney and Urinary Tract Signs and Symptoms with MCC, relative weight 1.1139) and DRG 696 (Kidney and Urinary Tract Signs and Symptoms without MCC, relative weight 0.6679), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific proteinuria codes (official index)
- Bence Jones R80.3 — Bence Jones proteinuria
- complicating pregnancy
- gestational
- complicating
- childbirth O12.14 — Gestational proteinuria, complicating childbirth
- pregnancy O12.1 — Gestational proteinuria
- with edema O12.2 — Gestational edema with proteinuria
- puerperium O12.15 — Gestational proteinuria, complicating the puerperium
- idiopathic R80.0 — Isolated proteinuria
- isolated R80.0 — Isolated proteinuria
- with glomerular lesion N06.9 — Isolated proteinuria with unspecified morphologic lesion
- C3
- glomerulonephritis N06.A — Isolated proteinuria with C3 glomerulonephritis
- glomerulopathy N06.A — Isolated proteinuria with C3 glomerulonephritis
- with dense deposit disease N06.6 — Isolated proteinuria with dense deposit disease
- dense deposit disease N06.6 — Isolated proteinuria with dense deposit disease
- diffuse
- crescentic glomerulonephritis N06.7 — Isolated proteinuria with diffuse crescentic glomerulonephritis
- endocapillary proliferative glomerulonephritis N06.4 — Isolated proteinuria with diffuse endocapillary proliferative glomerulonephritis
- mesangiocapillary glomerulonephritis N06.5 — Isolated proteinuria with diffuse mesangiocapillary glomerulonephritis
- focal and segmental hyalinosis or sclerosis N06.1 — Isolated proteinuria with focal and segmental glomerular lesions
- membranous (diffuse) N06.20 — Isolated proteinuria with diffuse membranous glomerulonephritis, unspecified
- with diffuse membranous glomerulonephritis N06.29 — Other isolated proteinuria with diffuse membranous glomerulonephritis
- mesangial proliferative (diffuse) N06.3 — Isolated proteinuria with diffuse mesangial proliferative glomerulonephritis
- minimal change N06.0 — Isolated proteinuria with minor glomerular abnormality
- specified pathology NEC N06.8 — Isolated proteinuria with other morphologic lesion
- orthostatic R80.2 — Orthostatic proteinuria, unspecified
- with glomerular lesion
- persistent R80.1 — Persistent proteinuria, unspecified
- with glomerular lesion
- postural R80.2 — Orthostatic proteinuria, unspecified
- with glomerular lesion
- pre-eclamptic
- puerperal O12.15 — Gestational proteinuria, complicating the puerperium
- specified type NEC R80.8 — Other proteinuria
Common questions about proteinuria ICD-10 codes
What is the ICD-10 code for proteinuria?
- R80.9 — Proteinuria, unspecified. More specific codes apply when the documentation supports them: R80.3, O12.14, O12.1, O12.2 and others below.
What is the ICD-10 code for bence jones proteinuria?
- R80.3 — Bence Jones proteinuria.
What is the ICD-10 code for idiopathic proteinuria?
- R80.0 — Isolated proteinuria.
What is the ICD-10 code for isolated proteinuria?
- R80.0 — Isolated proteinuria.
What is the ICD-10 code for orthostatic proteinuria?
- R80.2 — Orthostatic proteinuria, unspecified.
What is the ICD-10 code for persistent proteinuria?
- R80.1 — Persistent proteinuria, unspecified.
What is the ICD-10 code for postural proteinuria?
- R80.2 — Orthostatic proteinuria, unspecified.
Is R80.9 billable?
- Yes. R80.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R80.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R80.9 as a principal diagnosis.
Is R80.9 a CC or MCC?
- No. R80.9 is neither a CC nor an MCC under MS-DRG v44.0.