FY2027 ICD-10-CM reference
S14.143D: Brown-Sequard syndrome at C3 level of cervical spinal cord, subsequent encounter
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Brown-Sequard syndrome at C3 level of cervical spinal cord, subsequent encounter. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Billable code. Verified against the official FY2027 order file.
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Instructional note
Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
Source: S00-T88 (chapter, inherited).
Instructional note
code to identify any retained foreign body, if applicable (Z18.-)
Source: S00-T88 (chapter, inherited).
Excludes2
birth trauma (P10-P15)
Source: S00-T88 (chapter, inherited).
Excludes2
obstetric trauma (O70-O71)
Source: S00-T88 (chapter, inherited).
Instructional note
The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Source: S00-T88 (chapter, inherited).
Includes
injuries of nape
Source: S10-S19 (section, inherited).
Includes
injuries of supraclavicular region
Source: S10-S19 (section, inherited).
Includes
injuries of throat
Source: S10-S19 (section, inherited).
Excludes2
burns and corrosions (T20-T32)
Source: S10-S19 (section, inherited).
Excludes2
effects of foreign body in esophagus (T18.1)
Source: S10-S19 (section, inherited).
Excludes2
effects of foreign body in larynx (T17.3)
Source: S10-S19 (section, inherited).
Excludes2
effects of foreign body in pharynx (T17.2)
Source: S10-S19 (section, inherited).
Excludes2
effects of foreign body in trachea (T17.4)
Source: S10-S19 (section, inherited).
Excludes2
frostbite (T33-T34)
Source: S10-S19 (section, inherited).
Excludes2
insect bite or sting, venomous (T63.4)
Source: S10-S19 (section, inherited).
Instructional note
Code to highest level of cervical cord injury
Source: S14 (category, inherited).
Code also
any associated:
Source: S14 (category, inherited).
Code also
fracture of cervical vertebra (S12.0--S12.6.-)
Source: S14 (category, inherited).
Code also
open wound of neck (S11.-)
Source: S14 (category, inherited).
Code also
transient paralysis (R29.5)
Source: S14 (category, inherited).
Seventh-character instruction
The appropriate 7th character is to be added to each code from category S14
Source: S14 (category, inherited).
Instructional note
initial encounter
Source: S14 (category, inherited).
Instructional note
subsequent encounter
Source: S14 (category, inherited).
Instructional note
sequela
Source: S14 (category, inherited).
Seventh-character definitions
- A: initial encounter
- D: subsequent encounter
- S: sequela
Compare the FY2027 additions, removals and billable-status changes
What does S14.143D mean in FY2027?
The official ICD-10-CM descriptor is Brown-Sequard syndrome at C3 level of cervical spinal cord, subsequent encounter. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is S14.143D billable in FY2027?
The FY2027 order file marks S14.143D as billable. Check the complete Tabular instructions and documentation before assigning it.
Does S14.143D map to an HCC?
In the CMS 2027 Initial ICD-10-CM Mappings (payment year 2027, 2026 dates of service), S14.143D maps to CMS-HCC V28 HCC 182 (Spinal Cord Disorders/Injuries). For 2027 dates of service, CMS has not yet published the payment year 2028 mappings. Under the PY2026 CMS mapping; CMS 2027 initial file unchanged: ESRD HCC 72; no RxHCC category. Coefficients for these models are pending verification for payment year 2027. HHS-HCC: HCC 110 under the HHS-HCC 2026 benefit year mapping (no RAF; HHS-HCC weights vary by metal level). CMS-HCC V24: not used for payment year 2027 Medicare Advantage payment (CMS CY 2027 Rate Announcement). The PACE mapping is still pending verification for FY2027.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition