2026 ICD-10-CM Diagnosis Code N48.81Thrombosis of superficial vein of penis

ICD-10-CM Codes›N00–N99›N40-N53›N48

ICD-10-CM N48.81
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N48.81 is a billable ICD-10-CM diagnosis code for thrombosis of superficial vein of penis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 729 through 730. Coders also document this condition as embolism of blood vessel of corpus cavernosum of penis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified male genital disorders.

Code Identity

ICD-10-CM Code
N48.81
Billable Status
Yes — Valid for Submission
Code Describes
Thrombosis of superficial vein of penis
Short Description
Thrombosis of superficial vein of penis
Same as the full description in the CMS dataset.
Parent Code
N48.8
Other specified disorders of penis

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN40-N53Diseases of male genital organs
CategoryN48Other disorders of penis
This CodeN48.81Thrombosis of superficial vein of penis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Embolism of blood vessel of corpus cavernosum of penis
  • Embolism of penis
  • Thrombosis of penile vein
  • Thrombosis of penis
  • Thrombosis of superficial vein of penis
  • Thrombus of corpus cavernosum of penis
  • Vascular disorder of corpus cavernosum of penis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Embolism(multiple) (paradoxical)
      • penis
    • Thrombosis, thrombotic(bland) (multiple) (progressive) (silent) (vessel)
      • penis, superficial vein

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR GEN016
Other specified male genital disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Penis Disorders

Problems with the penis can cause pain and affect a man's sexual function and fertility. Penis disorders include:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert N48.81 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
607.89 Disorder of penis NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N48.81Overview

Is N48.81 (Other specified disorders of penis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report thrombosis of superficial vein of penis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N48.81 group to?

When thrombosis of superficial vein of penis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 729, 730, with relative weights from 0.6720 to 1.0587 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N48.81?

Under the General Equivalence Mappings, thrombosis of superficial vein of penis converts to ICD-9-CM 607.89 (disorder of penis NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.