Surgical Site Infection Following a Procedure

Subcategory T81.4, Infection following a procedure, has been expanded and new codes created to identify surgical site infections according to depth. Six codes were created to describe infection following a procedure: unspecified (T81.40); infection following a procedure, superficial incisional surgical site (T81.41); infection following a procedure, deep incisional surgical site (T81.42); infection following a procedure, organ and space surgical site (T81.43); sepsis following a procedure (T81.44); and infection following a procedure, other surgical site (T81.49). These codes are assigned based on the provider’s documentation of a postsurgical wound infection (surgical site...

Subscribe or sign in to view the full article.

Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article covers the expansion of ICD-10-CM subcategory T81.4 for infections following a procedure and discusses how surgical site infections are differentiated by depth. It also notes related revisions to the ICD-10-CM Official Guidelines for Coding and Reporting and includes a postoperative case example involving documentation and infection classification. The content is aimed at coding professionals, CDI staff, auditors, and others who work with postoperative complication coding and infection-related diagnosis reporting.

Why This Topic Matters

Postoperative infections are common and can be documented in several ways, so understanding the updated diagnosis structure and supporting guidance helps ensure consistent reporting, cleaner data, and more accurate communication of complication severity.

Article Sections

  1. Overview of infection following a procedure codes

    Introduces the expanded ICD-10-CM subcategory for infections following a procedure and explains the general purpose of the update. It frames the article as guidance on postoperative infection reporting.

  2. Surgical site infection categories and classification

    Describes the broad classification of surgical site infections by depth and references the organizations and criteria associated with that framework. It also notes why the code revisions were requested.

  3. ICD-10-CM Official Guidelines revision

    Summarizes that related reporting guidelines were revised to support use of the updated diagnosis structure. The section situates the coding changes within official ICD-10-CM reporting guidance.

  4. Clinical example

    Presents a postoperative case scenario involving a wound infection after surgery and a question about the appropriate diagnosis assignment. The example illustrates the type of documentation discussed in the article.

What You Will Learn

  • How the infection following a procedure category was expanded in ICD-10-CM
  • How surgical site infections are broadly organized by depth
  • Which organizations and guideline sources are associated with the reporting update
  • What kinds of postoperative documentation are relevant to this topic

Who Should Read This

  • Medical coders
  • Coding auditors
  • Clinical documentation improvement specialists
  • Revenue cycle staff
  • Compliance professionals
  • Health information management professionals

Codes Discussed


Subscribe or sign in to view the full article.

  • The official AHA publication for ICD-10-CM and ICD-10-PCS coding guidelines and advice
  • Current newsletters added each quarter
  • Full Archives - over 3100 articles
  • ALL years/issues back to 1984 organized by year and issue
  • Includes ICD-10-CM/PCS Articles since 2013
  • Fully searchable through Find-A-Code's Comprehensive Search
  • Codes mentioned in articles are linked to Code Information pages
  • Code Information pages link back to related articles
  • View all the articles associated with any code, right from the code page!
Access to this feature is available in the following products:
  • AHA's Coding Clinic® - ICD-10-CM/PCS +Archives

demo
request yours today
subscribe
start today
newsletter
free subscription

Thank you for choosing Find-A-Code, please Sign In to remove ads.

Aimee- AI -powered coding assistant - Try it now for Free Would you like Aimee - AI
to help you with this?