ICDcodes.org
FY2027

T38.803APoisoning by unspecified hormones and synthetic substitutes, assault, initial encounter

BillableUnspecified

Is T38.803A billable?

Yes, but T38.803A is an unspecified code. T38.803A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T38.803A is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T38.803A.

T38.803A at a glance

CodeT38.803A
DescriptionPoisoning by unspecified hormones and synthetic substitutes, assault, initial encounter
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027
7th character "A"initial encounter

What does the 7th character "A" mean in T38.803A?

In T38.803A, the 7th character A means initial encounter. The 7th character is required for T38.803A to be a valid, complete code.

Same condition, different episode of care — switch the 7th character:

Which MS-DRGs does T38.803A group to?

T38.803A sits in MDC 21 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 917Poisoning and Toxic Effects of Drugs with MCCmedical
  • 918Poisoning and Toxic Effects of Drugs without MCCmedical

Excludes1 — never code together — inherited from T36-T50

The conditions below can never be reported together with T38.803A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • toxic reaction to local anesthesia in pregnancy (O29.3-)

Excludes1 — never code together — inherited from T38

The conditions below can never be reported together with T38.803A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • mineralocorticoids and their antagonists (T50.0-)
  • oxytocic hormones (T48.0-)
  • parathyroid hormones and derivatives (T50.9-)

Code first — inherited from T36-T50

The underlying condition below must be sequenced before T38.803A. T38.803A describes a manifestation and cannot be the principal or first-listed diagnosis.

  • , for adverse effects, the nature of the adverse effect, such as:
  • adverse effect NOS (T88.7)
  • aspirin gastritis (K29.-)
  • blood disorders (D56-D76)
  • contact dermatitis (L23-L25)
  • dermatitis due to substances taken internally (L27.-)
  • nephropathy (N14.0-N14.2)

Use additional code — inherited from Chapter 19

Report an additional code alongside T38.803A to fully describe the condition. T38.803A is sequenced first.

  • code to identify any retained foreign body, if applicable (Z18.-)

Use additional code — inherited from T36-T50

Report an additional code alongside T38.803A to fully describe the condition. T38.803A is sequenced first.

  • code(s) to specify:
  • manifestations of poisoning
  • underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
  • underdosing of medication regimen (Z91.12-, Z91.13-)

Excludes2 — not included here — inherited from Chapter 19

The conditions below are not part of T38.803A, but a patient may have both at the same time. When documentation supports it, T38.803A and the excluded code may both be reported.

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)

Excludes2 — not included here — inherited from T36-T50

The conditions below are not part of T38.803A, but a patient may have both at the same time. When documentation supports it, T38.803A and the excluded code may both be reported.

  • abuse and dependence of psychoactive substances (F10-F19)
  • abuse of non-dependence-producing substances (F55.-)
  • immunodeficiency due to drugs (D84.821)
  • drug reaction and poisoning affecting newborn (P00-P96)
  • pathological drug intoxication (inebriation) (F10-F19)

How long has T38.803A existed?

T38.803A has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.