T78.070A vs T78.070D
T78.070A (Anaphylactic reaction due to milk and dairy products with tolerance to baked milk, initial encounter) compared with T78.070D (Anaphylactic reaction due to milk and dairy products with tolerance to baked milk, subsequent encounter), from the official CMS tabular data. T78.070A and T78.070D code the same injury at a different phase of treatment.
Can these codes be reported together?
Same injury, other encounter phase. T78.070A and T78.070D code the same injury at a different phase of treatment, set by the 7th character.
The 7th character records the type of care given at the encounter being coded (ICD-10-CM Official Guidelines, Section I.C.19.a), so one encounter takes one of these, not both.
Side by side
| T78.070AAnaphylactic reaction due to milk and dairy products with tolerance to baked milk, initial encounter | T78.070DAnaphylactic reaction due to milk and dairy products with tolerance to baked milk, subsequent encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Anaphylactic reaction due to milk and dairy products with tolerance to baked milk, initial encounter is a billable ICD-10-CM diagnosis code (T78.070A). | Anaphylactic reaction due to milk and dairy products with tolerance to baked milk, subsequent encounter is a billable ICD-10-CM diagnosis code (T78.070D). |
| 7th character | The appropriate 7th character is to be added to each code from category T78 | The appropriate 7th character is to be added to each code from category T78 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources