T86.20 Unspecified complication of heart transplant

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from T86 Complications of transplanted organs and tissue

Use additional code

• code to identify other transplant complications, such as:
• graft-versus-host disease (D89.81-)
• malignancy associated with organ transplant (C80.2)
• post-transplant lymphoproliferative disorders (PTLD) (D47.Z1)

Applies from T86.2 Complications of heart transplant

Excludes1 (never code together)

• complication of:
• artificial heart device (T82.5-)
• heart-lung transplant (T86.3-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 221 — Heart Transplant Status/Complications
• CMS-HCC V22: HCC 186 — Major Organ Transplant or Replacement Status
• RxHCC V08: HCC 396 — Heart, Lung, Liver, Intestine, or Pancreas Transplant Status
• ESRD V24: HCC 186

MS-DRG index

Defines the logic of DRG(s) 314-316 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 996.83 Complications of transplanted heart (approximate)

Code annotations containing back-references to T86.20

Back-references to T86.2

• Code First: D59.39 Other hemolytic-uremic syndrome ("complications of heart transplant (T86.2-)")

Back-references to T86

• Code First: C80.2 Malignant neoplasm associated with transplanted organ ("complication of transplanted organ (T86.-)")
• Code First: D47.Z1 Post-transplant lymphoproliferative disorder (PTLD) ("complications of transplanted organs and tissue (T86.-)")
• Type 2 Excludes: D89 Other disorders involving the immune mechanism, not elsewhere classified ("transplant failure and rejection (T86.-)")
• Code First: D89.81 Graft-versus-host disease ("complications of transplanted organs and tissue (T86.-)")
• Code First: D89.83 Cytokine release syndrome ("complications of transplanted organs and tissue (T86.-)")
• Type 2 Excludes: T78 Adverse effects, not elsewhere classified ("complications of surgical and medical care NEC (T80-T88)")
• Type 2 Excludes: T79 Certain early complications of trauma, not elsewhere classified ("complications occurring during or following medical procedures (T80-T88)")
• Type 2 Excludes: T79 Certain early complications of trauma, not elsewhere classified ("complications of surgical and medical care NEC (T80-T88)")
• Type 2 Excludes: T81 Complications of procedures, not elsewhere classified ("complications of transplanted organs and tissue (T86.-)")
• Type 2 Excludes: T82 Complications of cardiac and vascular prosthetic devices, implants and grafts ("failure and rejection of transplanted organs and tissue (T86.-)")
• Type 2 Excludes: T83 Complications of genitourinary prosthetic devices, implants and grafts ("failure and rejection of transplanted organs and tissue (T86.-)")
• Type 2 Excludes: T84 Complications of internal orthopedic prosthetic devices, implants and grafts ("failure and rejection of transplanted organs and tissues (T86.-)")
• Type 2 Excludes: T85 Complications of other internal prosthetic devices, implants and grafts ("failure and rejection of transplanted organs and tissue (T86.-)")
• Type 1 Excludes: Z98.85 Transplanted organ removal status ("encounter for removal of transplanted organ -code to complication of transplanted organ (T86.-)")

Diagnosis Index entries for T86.20

• Complication (s) (from) (of) › transplant › heart

Nearby codes

• T86.11 Kidney transplant rejection
• T86.12 Kidney transplant failure
• T86.13 Kidney transplant infection
• T86.19 Other complication of kidney transplant
• T86.2 Complications of heart transplant
• T86.20 Unspecified complication of heart transplant (this code)
• T86.21 Heart transplant rejection
• T86.22 Heart transplant failure
• T86.23 Heart transplant infection
• T86.29 Other complications of heart transplant
• T86.290 Cardiac allograft vasculopathy