ICD-10 · PDGM grouping
I80 Phlebitis and thrombophlebitis
All 39 codes in the I80 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
39
Can lead a claim
29
Cannot lead a claim
10
What CMS assigns to I80
29 of the 39 codes group to MMTA - Cardiac and Circulatory; 10 are assigned no clinical group. None of the 39 is assigned a comorbidity subgroup. 29 of the 39 can lead a claim. CMS attaches a code-first note to all 39.
Code first
CMS grouper convention 81, on all 39 codes. Code first:
- , if applicable: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7)
- phlebitis and thrombophlebitis complicating pregnancy, childbirth and the puerperium (O22.-, O87.-)
Every code in I80
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| I80.0 Phlebitis and thrombophlebitis of superficial vessels of lower extremities | ||||
| I80.00 | Phlebitis and thrombophlebitis of superficial vessels of unspecified lower extremityCMS: Phlbts and thombophlb of superfic vessels of unsp low extrm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| I80.01 | Phlebitis and thrombophlebitis of superficial vessels of right lower extremityCMS: Phlebitis and thombophlb of superfic vessels of r low extrem | Can lead a claim, code first applies | H | None |
| I80.02 | Phlebitis and thrombophlebitis of superficial vessels of left lower extremityCMS: Phlebitis and thombophlb of superfic vessels of l low extrem | Can lead a claim, code first applies | H | None |
| I80.03 | Phlebitis and thrombophlebitis of superficial vessels of lower extremities, bilateralCMS: Phlbts and thombophlb of superfic vessels of low extrm, bi | Can lead a claim, code first applies | H | None |
| I80.1 Phlebitis and thrombophlebitis of femoral vein | ||||
| I80.10 | Phlebitis and thrombophlebitis of unspecified femoral vein | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| I80.11 | Phlebitis and thrombophlebitis of right femoral vein | Can lead a claim, code first applies | H | None |
| I80.12 | Phlebitis and thrombophlebitis of left femoral vein | Can lead a claim, code first applies | H | None |
| I80.13 | Phlebitis and thrombophlebitis of femoral vein, bilateral | Can lead a claim, code first applies | H | None |
| I80.2 Phlebitis and thrombophlebitis of other and unspecified deep vessels of lower extremities | ||||
| I80.20 Phlebitis and thrombophlebitis of unspecified deep vessels of lower extremities | ||||
| I80.201 | Phlebitis and thrombophlebitis of unspecified deep vessels of right lower extremityCMS: Phlbts and thombophlb of unsp deep vessels of r low extrem | Can lead a claim, code first applies | H | None |
| I80.202 | Phlebitis and thrombophlebitis of unspecified deep vessels of left lower extremityCMS: Phlbts and thombophlb of unsp deep vessels of l low extrem | Can lead a claim, code first applies | H | None |
| I80.203 | Phlebitis and thrombophlebitis of unspecified deep vessels of lower extremities, bilateralCMS: Phlbts and thombophlb of unsp deep vessels of low extrm, bi | Can lead a claim, code first applies | H | None |
| I80.209 | Phlebitis and thrombophlebitis of unspecified deep vessels of unspecified lower extremityCMS: Phlbts and thombophlb of unsp deep vessels of unsp low extrm | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| I80.21 Phlebitis and thrombophlebitis of iliac vein | ||||
| I80.211 | Phlebitis and thrombophlebitis of right iliac vein | Can lead a claim, code first applies | H | None |
| I80.212 | Phlebitis and thrombophlebitis of left iliac vein | Can lead a claim, code first applies | H | None |
| I80.213 | Phlebitis and thrombophlebitis of iliac vein, bilateral | Can lead a claim, code first applies | H | None |
| I80.219 | Phlebitis and thrombophlebitis of unspecified iliac vein | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| I80.22 Phlebitis and thrombophlebitis of popliteal vein | ||||
| I80.221 | Phlebitis and thrombophlebitis of right popliteal vein | Can lead a claim, code first applies | H | None |
| I80.222 | Phlebitis and thrombophlebitis of left popliteal vein | Can lead a claim, code first applies | H | None |
| I80.223 | Phlebitis and thrombophlebitis of popliteal vein, bilateral | Can lead a claim, code first applies | H | None |
| I80.229 | Phlebitis and thrombophlebitis of unspecified popliteal vein | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| I80.23 Phlebitis and thrombophlebitis of tibial vein | ||||
| I80.231 | Phlebitis and thrombophlebitis of right tibial vein | Can lead a claim, code first applies | H | None |
| I80.232 | Phlebitis and thrombophlebitis of left tibial vein | Can lead a claim, code first applies | H | None |
| I80.233 | Phlebitis and thrombophlebitis of tibial vein, bilateral | Can lead a claim, code first applies | H | None |
| I80.239 | Phlebitis and thrombophlebitis of unspecified tibial vein | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| I80.24 Phlebitis and thrombophlebitis of peroneal vein | ||||
| I80.241 | Phlebitis and thrombophlebitis of right peroneal vein | Can lead a claim, code first applies | H | None |
| I80.242 | Phlebitis and thrombophlebitis of left peroneal vein | Can lead a claim, code first applies | H | None |
| I80.243 | Phlebitis and thrombophlebitis of peroneal vein, bilateral | Can lead a claim, code first applies | H | None |
| I80.249 | Phlebitis and thrombophlebitis of unspecified peroneal vein | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| I80.25 Phlebitis and thrombophlebitis of calf muscular vein | ||||
| I80.251 | Phlebitis and thrombophlebitis of right calf muscular vein | Can lead a claim, code first applies | H | None |
| I80.252 | Phlebitis and thrombophlebitis of left calf muscular vein | Can lead a claim, code first applies | H | None |
| I80.253 | Phlebitis and thrombophlebitis of calf muscular vein, bilateralCMS: Phlebitis and thombophlb of calf muscular vein, bilateral | Can lead a claim, code first applies | H | None |
| I80.259 | Phlebitis and thrombophlebitis of unspecified calf muscular veinCMS: Phlebitis and thombophlb of unspecified calf muscular vein | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| I80.29 Phlebitis and thrombophlebitis of other deep vessels of lower extremities | ||||
| I80.291 | Phlebitis and thrombophlebitis of other deep vessels of right lower extremityCMS: Phlebitis and thombophlb of deep vessels of r low extrem | Can lead a claim, code first applies | H | None |
| I80.292 | Phlebitis and thrombophlebitis of other deep vessels of left lower extremityCMS: Phlebitis and thombophlb of deep vessels of l low extrem | Can lead a claim, code first applies | H | None |
| I80.293 | Phlebitis and thrombophlebitis of other deep vessels of lower extremity, bilateralCMS: Phlebitis and thombophlb of deep vessels of low extrm, bi | Can lead a claim, code first applies | H | None |
| I80.299 | Phlebitis and thrombophlebitis of other deep vessels of unspecified lower extremityCMS: Phlebitis and thombophlb of deep vessels of unsp low extrm | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| I80.3 | Phlebitis and thrombophlebitis of lower extremities, unspecifiedCMS: Phlebitis and thrombophlebitis of lower extremities, unsp | Can lead a claim, code first applies | H | None |
| I80.8 | Phlebitis and thrombophlebitis of other sites | Can lead a claim, code first applies | H | None |
| I80.9 | Phlebitis and thrombophlebitis of unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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