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ICD-10-CM 2027 diagnosis code

I87.03Postthrombotic syndrome with ulcer and inflammation

Not billable — use a more specific code

I87.03 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About I87.03

I87.03 is the ICD-10-CM diagnosis code for Postthrombotic syndrome with ulcer and inflammation. It belongs to category I87 (other disorders of veins), block I80-I89 (diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within I87.0 (Postthrombotic syndrome), I87.03 is specifically for Postthrombotic syndrome with ulcer and inflammation. Related codes cover without complications (I87.00), with ulcer (I87.01), with inflammation (I87.02) and with other complications (I87.09).

To report this condition, pick the subcode that matches the documentation: I87.031 (of right lower extremity), I87.032 (of left lower extremity), I87.033 (of bilateral lower extremity) and I87.039 (of unspecified lower extremity).

Use an additional code to specify site and severity of ulcer (L97.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under I87.03

Coding notes

Use additional codeAdd a secondary code to fully describe the condition
  • code to specify site and severity of ulcer (L97.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to I87.03.

› From I87.0 Postthrombotic syndrome
Excludes1
  • chronic venous hypertension without deep vein thrombosis (I87.3-)

Broader instructions also apply from Chapter 9: Diseases of the circulatory system.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to I87.03.

Codes whose notes reference I87.03

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about I87.03

Is I87.03 billable?

No. I87.03 is a header code. Report one of its more specific subcodes instead.