Alphabetic Index FY2027

I82.4Z

Acute embolism and thrombosis of unspecified deep veins of distal lower extremity

FY2027Chapter 9: Diseases of the circulatory system/I80–I89 Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

I82.4Z is a non-billable ICD-10-CM code header for acute embolism and thrombosis of unspecified deep veins of distal lower extremity. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I82.4Z1 Acute embolism and thrombosis of unspecified deep veins of right distal lower extremity; I82.4Z2 Acute embolism and thrombosis of unspecified deep veins of left distal lower extremity; I82.4Z3 Acute embolism and thrombosis of unspecified deep veins of distal lower extremity, bilateral and I82.4Z9 Acute embolism and thrombosis of unspecified deep veins of unspecified distal lower extremity. Its coding notes include a Code first instruction and 19 Excludes2 entries.

Code first

If the underlying condition listed here is present and known, sequence it first.

Inherited from I82 Other venous embolism and thrombosis
  • venous embolism and thrombosis complicating:
    • abortion, ectopic or molar pregnancy (O00-O07, O08.7)
    • pregnancy, childbirth and the puerperium (O22.-, O87.-)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from I82 Other venous embolism and thrombosis
  • venous embolism and thrombosis (of):
    • cerebral (I63.6, I67.6)
    • coronary (I21-I25)
    • intracranial and intraspinal, septic or NOS (G08)
    • intracranial, nonpyogenic (I67.6)
    • intraspinal, nonpyogenic (G95.1)
    • mesenteric (K55.0-)
    • portal (I81)
    • pulmonary (I26.-)
Also from chapter/block level (10 notes)
Inherited from Chapter 9 Diseases of the circulatory system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Inclusion terms

Conditions classified to this code.

This code
  • Acute embolism and thrombosis of deep vein of calf NOS
  • Acute embolism and thrombosis of deep vein of lower leg NOS

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 6 entries

More specific codes under I82.4Z 4