FY2027 ICD-10-CM reference
I80: Phlebitis and thrombophlebitis
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Phlebitis and thrombophlebitis. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
- I80.0: Phlebitis and thrombophlebitis of superficial vessels of lower extremitiesNonbillable heading
- I80.1: Phlebitis and thrombophlebitis of femoral veinNonbillable heading
- I80.2: Phlebitis and thrombophlebitis of other and unspecified deep vessels of lower extremitiesNonbillable heading
- I80.3: Phlebitis and thrombophlebitis of lower extremities, unspecifiedBillable code
- I80.8: Phlebitis and thrombophlebitis of other sitesBillable code
- I80.9: Phlebitis and thrombophlebitis of unspecified siteBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Excludes2
certain conditions originating in the perinatal period (P04-P96)
Source: I00-I99 (chapter, inherited).
Excludes2
certain infectious and parasitic diseases (A00-B99)
Source: I00-I99 (chapter, inherited).
Excludes2
complications of pregnancy, childbirth and the puerperium (O00-O9A)
Source: I00-I99 (chapter, inherited).
Excludes2
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
Source: I00-I99 (chapter, inherited).
Excludes2
endocrine, nutritional and metabolic diseases (E00-E88)
Source: I00-I99 (chapter, inherited).
Excludes2
injury, poisoning and certain other consequences of external causes (S00-T88)
Source: I00-I99 (chapter, inherited).
Excludes2
neoplasms (C00-D49)
Source: I00-I99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: I00-I99 (chapter, inherited).
Excludes2
systemic connective tissue disorders (M30-M36)
Source: I00-I99 (chapter, inherited).
Excludes2
transient cerebral ischemic attacks and related syndromes (G45.-)
Source: I00-I99 (chapter, inherited).
Includes
endophlebitis
Source: I80 (category, direct).
Includes
inflammation, vein
Source: I80 (category, direct).
Includes
periphlebitis
Source: I80 (category, direct).
Includes
suppurative phlebitis
Source: I80 (category, direct).
Code first
, if applicable: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7)
Source: I80 (category, direct).
Code first
phlebitis and thrombophlebitis complicating pregnancy, childbirth and the puerperium (O22.-, O87.-)
Source: I80 (category, direct).
Excludes1
venous embolism and thrombosis of lower extremities (I82.4-, I82.5-, I82.81-)
Source: I80 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does I80 mean in FY2027?
The official ICD-10-CM descriptor is Phlebitis and thrombophlebitis. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is I80 billable in FY2027?
The FY2027 order file marks I80 as a nonbillable heading. Select a complete billable child code.
Does I80 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
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