ICD-10 T86.8403
Billable / Specific CCCorneal transplant rejection, bilateral
About ICD-10-CM T86.8403
ICD-10-CM code T86.8403 represents Corneal transplant rejection, bilateral. This is a billable/specific code in the Injury, Poisoning, and External Causes chapter (block T86). The 2026 edition of ICD-10-CM T86.8403 became effective on October 1, 2025.
Coding Tips for T86.8403
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
T86.8403 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Injury codes require a 7th character: A (initial encounter, active treatment), D (subsequent, healing/recovery), S (sequela, late effect of original injury). Codes with fewer than 6 characters need the placeholder X to bring them to 6 characters before adding the 7th. Wrong or missing 7th character is the #1 cause of injury claim denials.
Inpatient DRG Impact, CC
codes Corneal transplant rejection, bilateral. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for T86.8403
Local Coverage Determinations (LCDs) from CMS MACs that list T86.8403 as a covered diagnosis.
Showing top 10 of 90 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing T86.8403.
5 Medicare
CPT Codes Commonly Billed with T86.8403
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To T86.8403
Other codes in section T80-T88 (Complications of surgical and medical care, not elsewhere classified).
ICD-10 T86.8403, Billing FAQ
Is ICD-10 code T86.8403 billable? +
Yes, T86.8403 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
Is T86.8403 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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