F07.81 ICD-10-CM Code: Postconcussional syndrome
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Mental disorders due to known physiological conditions (F01-F09)
F07.81
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidancePostconcussional syndrome
A collection of symptoms that can occur after a concussion or mild traumatic brain injury, including headaches, dizziness, memory problems, and mood changes.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Postcontusional syndrome (encephalopathy)
- Post-traumatic brain syndrome, nonpsychotic
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for F07.81 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for F07.81 in this effective period.
Excludes 1
Official- current concussion (brain) (S06.0X- with seventh character A)
- postencephalitic syndrome (F07.89)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for F07.81 in this effective period.
Use Additional
Official- code to identify associated post-traumatic headache, if applicable (G44.3-)
Code Also
Official- , if applicable, sequela of concussion (S06.0X- with seventh character S)
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is F07.81 an HCC code?
No. F07.81 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
F07.81 is the ICD-10-CM diagnosis code for postconcussional syndrome. A collection of symptoms that can occur after a concussion or mild traumatic brain injury, including headaches, dizziness, memory problems, and mood changes. F07.81 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering mental disorders due to known physiological conditions (f01-f09).
F07.81 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Document the history of concussion or head trauma in the medical record.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F07.81 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document the history of concussion or head trauma in the medical record
- •Postconcussional syndrome is typically diagnosed when symptoms persist for weeks to months after the initial injury
Excludes 1, Do NOT code together
Use Additional Code
- code to identify associated post-traumatic headache, if applicable (G44.3-)
Code Also
- , if applicable, sequela of concussion (S06.0X- with seventh character S)