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T81.42XA

T81.42XA: Infection following a procedure, deep incisional surgical site, initial encounter

Billable / specific codeICD-10-CM

T81.42XA is a billable, specific ICD-10-CM code for infection following a procedure, deep incisional surgical site, initial encounter. It is valid for submission on a claim.

Check T81.42XA with the rest of the claim: free scrubber

7th character "A": initial encounter

The appropriate 7th character is to be added to each code from category T81

A
initial encounter
D
subsequent encounter
S
sequela

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Intra-muscular abscess following a procedure

Excludes2 inherited from the categories above T81.42XA

Not part of this code, but both may be coded when both are present.

Written on T81.4: Infection following a procedure

  • bleb associated endophthalmitis (H59.4-)
  • infection due to infusion, transfusion and therapeutic injection (T80.2-)
  • infection due to prosthetic devices, implants and grafts (T82.6-T82.7, T83.5-T83.6, T84.5-T84.7, T85.7)
  • obstetric surgical wound infection (O86.0-)
  • postprocedural fever NOS (R50.82)
  • postprocedural retroperitoneal abscess (K68.11)

Written on T81: Complications of procedures, not elsewhere classified

  • complications following immunization (T88.0-T88.1)
  • complications following infusion, transfusion and therapeutic injection (T80.-)
  • complications of transplanted organs and tissue (T86.-)
  • specified complications classified elsewhere, such as:
  • complication of prosthetic devices, implants and grafts (T82-T85)
  • dermatitis due to drugs and medicaments (L23.3, L24.4, L25.1, L27.0-L27.1)
  • endosseous dental implant failure (M27.6-)
  • floppy iris syndrome (IFIS) (intraoperative) H21.81
  • intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)
  • ostomy complications (J95.0-, K94.-, N99.5-)
  • plateau iris syndrome (post-iridectomy) (postprocedural) H21.82
  • poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

T81.42XA is named in 16 Medicare coverage policies: 16 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A53057Billing and Coding: Home Health Occupational Therapy
  • A53064Billing and Coding: Outpatient Occupational Therapy
  • A55336Billing and Coding: Retroperitoneal Ultrasound
  • A55909Billing and Coding: Wound Care

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under T81.42

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.