Alphabetic Index FY2027

I82.56

Chronic embolism and thrombosis of calf muscular vein

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.

I82.56 is a non-billable ICD-10-CM code header for chronic embolism and thrombosis of calf muscular vein. 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 I82.561 Chronic embolism and thrombosis of right calf muscular vein; I82.562 Chronic embolism and thrombosis of left calf muscular vein; I82.563 Chronic embolism and thrombosis of calf muscular vein, bilateral and I82.569 Chronic embolism and thrombosis of unspecified calf muscular vein. Its coding notes include a Code first instruction, a Use additional code instruction, 1 Excludes1 entry 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.-)

Use additional code

Add the listed code as a secondary code, if known.

Inherited from I82.5 Chronic embolism and thrombosis of deep veins of lower extremity
  • code, if applicable, for associated long-term (current) use of anticoagulants (Z79.01)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from I82.5 Chronic embolism and thrombosis of deep veins of lower extremity
  • personal history of venous embolism and thrombosis (Z86.718)

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
  • Chronic embolism and thrombosis of calf muscular vein NOS
  • Chronic embolism and thrombosis of gastrocnemial vein
  • Chronic embolism and thrombosis of soleal vein

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 4 entries

More specific codes under I82.56 4