2027 ICD-10-CM Diagnosis Code F07.81Postconcussional syndrome

ICD-10-CM Codes›F01–F99›F01-F09›F07

ICD-10-CM F07.81
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

F07.81 is a billable ICD-10-CM diagnosis code for postconcussional syndrome. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 102 through 103. Coders also document this condition as chronic traumatic encephalopathy. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurocognitive disorders.

Code Identity

ICD-10-CM Code
F07.81
Billable Status
Yes — Valid for Submission
Code Describes
Postconcussional syndrome
Short Description
Postconcussional syndrome
Same as the full description in the CMS dataset.
Parent Code
F07.8
Other personality and behavioral disorders due to known physiological condition

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF01-F09Mental disorders due to known physiological conditions
CategoryF07Personality and behavioral disorders due to known physiological condition
This CodeF07.81Postconcussional syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic traumatic encephalopathy
  • Late effect of traumatic injury to brain
  • Postconcussion state
  • Postconcussion syndrome
  • Post-concussional personality disorder
  • Traumatic encephalopathy

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to F07.81: its own notes plus those printed at F07, block F01-F09, and Chapter 5. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • disorders of psychological development

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Postcontusional syndrome (encephalopathy)
  • Post-traumatic brain syndrome, nonpsychotic

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • current concussion (brain) (S06.0X- with seventh character A)
  • postencephalitic syndrome (F07.89)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Code First

The underlying condition named in the note is sequenced before this code.

From F07 Personality and behavioral disorders due to known physiological condition applies to 4 codes
  • the underlying physiological condition

Use Additional Code

Add a second code, after this one, to fully describe the condition.

  • code to identify associated post-traumatic headache, if applicable (G44.3-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

  • if applicable, sequela of concussion (S06.0X- with seventh character S)

Notes

General instructions on how these codes are used.

From Block F01-F09 Mental disorders due to known physiological conditions applies to 91 codes
  • This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name F07.81, its category, or a range that includes it.

Applicable To 1

These notes mention F07.81.

  • O99.34 Other mental disorders complicating pregnancy, childbirth, and the puerperium
    Conditions in F01-F09, F20-F52 and F54-F99 names F01-F09, which includes this code

Excludes1 1

These codes carry an Excludes1 note naming F07.81: they are not reported together with it, unless the two conditions are unrelated.

  • F07.0 Personality change due to known physiological condition
    postconcussional syndrome (F07.81)

Excludes2 2

These codes carry an Excludes2 note naming F07.81: its condition is not part of those codes, and both may be reported when the patient has both.

  • F63.1 Pyromania
    mental disorders due to known physiological condition (F01-F09) names F01-F09, which includes this code
  • F63.2 Kleptomania
    stealing in mental disorders due to known physiological condition (F01-F09) names F01-F09, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS011
Neurocognitive disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Concussion

A concussion is a type of brain injury. It involves a short loss of normal brain function. It happens when a hit to the head or body causes your head and brain to move rapidly back and forth. This sudden movement can cause the brain to bounce around or twist in the skull, creating chemical changes in your brain.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert F07.81 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
310.2 Postconcussion syndrome
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About F07.81Overview

What is the ICD-10 code for postconcussional syndrome?

The ICD-10-CM code for postconcussional syndrome is F07.81 (sometimes written as F0781). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is F07.81 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report postconcussional syndrome on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does F07.81 group to?

When postconcussional syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 102, 103, with relative weights from 0.8219 to 1.1200 depending on complications. Higher weights mean higher Medicare reimbursement.

Can F07.81 be reported with a code from S06.0X?

Not as a rule. The Excludes1 note on F07.81 lists "current concussion (brain) (S06.0X- with seventh character A)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

Does F07.81 need an additional code?

When the condition applies, yes. The Use Additional Code note reads: code to identify associated post-traumatic headache, if applicable (G44.3-). The additional code is reported after F07.81.