FY2027Upcoming
Effective from
- Inherited rules changed
Hereditary alpha tryptasemia
Billable diagnosis code
CDC/NCHS · FY2027transplant failure and rejection (T86.-)
Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗Grouping depends on the complete encounter and CMS grouper logic.
2026-04-01 – 2026-09-30
CMS · MS-DRG 43.1First observed · 2021-10-01
Latest recorded change · FY2027
Effective from
Hereditary alpha tryptasemia
Billable diagnosis code
CDC/NCHS · FY2027| All editions | Effective from | Code history |
|---|---|---|
| FY2022 | 2021-10-01 | Added |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | Inherited rules changed |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | Inherited rules changed |
transplant failure and rejection (T86.-)
Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.
Previous assignment: D89.49
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| D89.40 | Mast cell activation, unspecified | Billable / specific |
| D89.41 | Monoclonal mast cell activation syndrome | Billable / specific |
| D89.42 | Idiopathic mast cell activation syndrome | Billable / specific |
| D89.43 | Secondary mast cell activation | Billable / specific |
| D89.49 | Other mast cell activation disorder | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗